The Sharing Economy is an innovative social, economic and technological paradigm which is shaping worldwide production and consumption patterns of many industries. Its strength relies on factors of competitiveness such as the use of idle capacity, temporary access to resources without transfer of ownership, the flexibility and adaptability of its models, and the participation of a growing number of players allowed by peer-to-peer digital platforms. From the management perspective, the conditions for lasting competitiveness lies on sustainability, the paradigm integrating the supply, demand, and technological dimensions in a holistic, or ecosystem, perspective. Tourism is among the industries making extensive use of sharing digital platforms and experiencing changes that foster the sustainability debate. The PhD Thesis aims to investigate the relationships between competitiveness and sustainability in the tourism and hospitality accommodation industry in the Sharing Economy Era. Its investigation is multifaced and is addressed through three studies adopting a post-modernist perspective that builds on qualitative approaches and strategies for data collection and analysis. The Part I of the Thesis explores the Sharing Economy concept’s evolution and the sustainability issues through an in-depth review of the literature. Results reveal the leading economic-technological evolution of the paradigm over the social one, and its dual links with sustainability in relation to the extensive use of peer-to-peer digital platforms. Therefore, the evolution of the Sharing Economy activities have shown that today competitiveness is built on the interactions of an ever-increasing number of actors and factors, both off-line and on-line, within a complex ecosystem for the creation of – shared – value. The tourism industry strongly challenges this relationship between extended competition and sustainability. The Part II evaluates the competitiveness model and its evolution during the Sharing eTourism Era in the tourism and hospitality accommodation sector introducing an ecosystem perspective for the creation and distribution of shared value. Specifically, it investigates how the non-traditional and informal tourist services have affected the structure of the industry and have altered the competition among the actors, through semi-structured in-depth interviews. Results show that competitiveness is given by the balance among the complex interactions of internal and external ecosystem’s actors and factors. On a micro level this imply that businesses must adopts an ecosystem vision compensating for negative externalities which translate into the adoption of Business Models promoting sustainability for the creation of sustainable shared value. Therefore, the Part III investigates through the use of an illustrative case study how peer-to-peer digital platforms in the tourist accommodation service can boost profitability while strengthening economic, social and environmental sustainability by applying the innovative Business Model for Sustainability. The research sheds light on the complex Sharing Economy literature and lays the theoretical foundations for the implementation of managerial strategies aimed at promoting extended sustainable competition-cooperation.

This paper examines how streaming services, with a particular focus on Spotify, have influenced music consumption through the implementation of algorithmically and humanly curated playlists and recommendation features. By placing the role of streaming services in a historical context, this paper explores streaming services as an extension of previous gatekeeping functions in the music industry. The paper examines how curated playlists and recommendations affect music consumption and the individual listener’s ability to discover new music. The result suggest that streaming services’ use of algorithmically and humanly curated playlists and recommendation functions constitute gatekeeping mechanisms. Due to the monopoly status of streaming services in society, this has an impact on what music is listened to and disseminated in society. Streaming services have also contributed to an increasingly more personalised music curation that differs from the governing mechanisms that previously controlled popular music. This partly contradicts the stated ambitions of streaming services to provide listeners with a means of discovering new music. The controlling functions of streaming services have in turn affected music creators who distribute their music on the platform. In what follows, it is explained how music creators have become increasingly aware of algorithmic features, leading to an adaptation of both the musical content and the music packaging to benefit from algorithmic advantages.

The diploma thesis focuses on the relations between digital intermediaries and media organizations on the Czech market. Its goal is to describe a new, ever-evolving environment, which has been affected by the swift rise of digital platforms and by the change in business models of publishers. The thesis puts this phenomenon in the context of media studies and critical political economy and defines the terms "digital platforms" and "digital intermediaries". It also looks more closely at the current challenges related with the content consumption in the digital environment - which includes a discussion of copyright, changes in user behavior and content monetization. The research part is based on individual in-depth interviews with members of digital intermediaries, media organizations and third parties. The analysis takes place in a general, ethical/normative point of view and aims for understanding how the parties interact and work together, how they perceive this environment, how they see its changes and future development.

Orientador: Jefferson Nascimento de Oliveira / Resumo: Os direitos da natureza são indispensáveis para a harmonia nos espaços de atuação e desenvolvimento da vida, onde o uso e a ocupação do solo impactam diretamente na disponibilidade e qualidade de recursos fundamentais como a água e outros bens comuns. Com a observação de iniciativas transnacionais, governamentais, laboratórios de ciência aberta, empresas e ONGs, esta pesquisa exploratória consolida cenários sobre intensos fluxos de multidões à deriva de projeções e sobre a capacidade adaptativa de aglomerados no Antropoceno. São elementos onde a Internet e os paradigmas do serviço total incitam plataformas digitais para novos produtos e serviços, adequadas à realidade dos jogos sociais contemporâneos. Com bases e referenciais em governança eletrônica para as águas, os resultados das explorações resultam na descoberta das organizações associativas cibernéticas (cyorgs) e as características fundamentais dos Escritórios da Resiliência Hídrica. Amparados por espaços antropológicos, de interação e implementações estratégicas de inovação em sustentabilidade, os produtos constroém a plataforma ÁguasML - Bem Comum em Mídia Livre, implementada digitalmente com código aberto via portais de notícias, ambientes de aprendizagem, automatizações e aplicativos para coleta e distribuição de dados. Apontam também alguns dos componentes das plataformas hidrotecnológicas nos Escritórios da Resiliência Hídrica, assim como os conteúdos, as experiências e as características de tecnologias resilient... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The rights of nature are indispensable for harmony in the spaces of participation and development of life, where the use and occupation of the lands directly affect the availability and quality of water and other commons. Observing transnational initiatives, governments, open science laboratories, corporations and NGOs, this exploratory research consolidates scenarios of intense flows of crowds drifting from projections and adaptive capacity in the Anthropocene. They are elements in which the internet and the paradigms of the total service incite digital platforms for new products and services, adapted to the mechanized reality of contemporary social games. With these baselines and benchmarks in electronic governance for water, the results of explorations are the discovery of cybernetic associative organizations (cyorgs) and the fundamental characteristics of Water Resilience Office´s. Based on anthropological spaces, spaces of interaction and strategic implementations of innovation in water sustainability, the work build the ÁguasML - Commons in Open Media platform, digitally implemented with open source through news portals, e-learning environments, automations and applications for collection and data distribution. They also show some of the components of hydrotechnology platforms at the offices for water resilience, as well as the contents, experiences and characteristics of resilient technologies in situations of water scarcity and vulnerability of rights. This office gen... (Complete abstract click electronic access below) / Mestre

Submitted by Maicon Juliano Schmidt (maicons) on 2015-06-26T16:39:23Z No. of bitstreams: 1 Leandra Dezotti Saldanha.pdf: 3756101 bytes, checksum: 67c251aec7c68c527f0087f000aa8629 (MD5) / Made available in DSpace on 2015-06-26T16:39:23Z (GMT). No. of bitstreams: 1 Leandra Dezotti Saldanha.pdf: 3756101 bytes, checksum: 67c251aec7c68c527f0087f000aa8629 (MD5) Previous issue date: 2013-01-31 / Nenhuma / O tema de pesquisa deste projeto de mestrado trata da forma como as cidades contemporâneas estão se desenvolvendo em relação às novas tecnologias de informação e comunicação e como se utilizam das plataformas digitais para valorização da sua imagem, ao inserirem-se no contexto das cibercidades. A investigação desenvolvida é um estudo de caso múltiplo, com foco nas capitais brasileiras e nas plataformas digitais que as representam, sejam estas governamentais, turísticas, sociais ou colaborativas. Essa análise leva em conta os modelos de referência mundiais existentes e os estudos teóricos já desenvolvidos sobre cibercidades, principalmente no que se refere aos modelos de cibercidades, de Lemos (2002) e a arquitetura de plataforma da cibercidade, desenvolvido por Ishida (2002) para Kyoto, de forma a obter subsídios de análise e poder tecer um panorama geral de como as cibercidades se estruturam no Brasil, buscando, através, desses resultados, formatar comparativos e contextualizar os problemas existentes, através da visão do design estratégico, gerando dados para novos estudos de como o design pode atuar na construção estratégica das cidades, no universo digital. / The research topic of this master's project addresses how contemporary cities are developing in relation to new technologies of information and communication and how to use digital platforms for promoting its image, to be inserted in the context of cybercities. The research undertaken is a multiple case study, focusing on the Brazilian capitals and on digital platforms that represent them, whether governmental, tourist, social or collaborative. This analysis takes into account the existing global reference models and theoretical studies already undertaken on cybercities, especially with regard to models cybercities, de Lemos (2002) and platform architecture of the cybercity, developed by Ishida (2002) to Kyoto in order to obtain data and analysis can weave an overview of how cybercities are structured in Brazil, searching through these results, comparative format and contextualize existing problems through the design of strategic vision, generating data for new studies how design can work on building strategic towns in the digital universe.

Esta tese acompanha a construção do Feed de Notícias do Facebook ao longo dos seus primeiros 10 anos (2006-2016) com o objetivo de descrever as formas como o mecanismo e a noção de algoritmo são definidos ao longo do período estudado. São analisados os conteúdos digitais, chamados de dispositivos textuais, que compõem publicamente o que o Feed de Notícias é e faz, descrevendo os atores implicados na composição dessa narrativa, mapeando seus objetivos e seus efeitos. A amostra analisada toma como ponto de partida os dispositivos textuais alocados em dois espaços digitais institucionais do Facebook: Facebook Blog e Facebook Newsroom. A partir da leitura de mais de mil publicações digitais do Facebook e de outros agentes (usuários, produtores de conteúdo, imprensa, ativistas etc.), foram selecionadas as publicações mais relevantes ao estudo, escolhidas com ênfase em eventos e circunstâncias de negociação ou mudança. A abordagem aqui construída representa uma composição de perspectivas dos estudos de ciência e tecnologia (STS) e da Teoria Ator-Rede (TAR). Trata-se do conjunto de procedimentos utilizados na descrição do caráter performativo dos textos. Na análise realizada na tese, são identificados três momentos distintos da construção da noção de algoritmo ao longo da trajetória do Feed de Notícias, chamados de Algoritmo Edgerank, Algoritmo Certo e Algoritmo Centrado no Usuário. Ao mesmo tempo, é apresentada a formulação do Feed de Notícias como um fluxo constante. É argumentado que as transformações no mecanismo são orientadas para gerar engajamento e manter usuários conectados ao Facebook. Engajamento é, na racionalidade emergente da construção do Feed de Notícias, uma mercadoria resultante de sua ação. Outra noção relevante decorrente da análise é a ideia de norma algorítmica como lógica normativa de visibilidade que busca regular o relacionamento entre produtores de conteúdo e o mecanismo, punindo os que não seguem as chamadas boas práticas. / This study follows the Facebook News Feed construction throughout its first ten years (2006– 2016). The objective of this research is to describe the way this mechanism and the notion of algorithm were compounded, enacted and transformed during that period. This is achieved through an analysis of the digital content (referred to here as ‘textual devices’) that publicly constructs what the News Feed is and how it functions. This analysis describes the actors involved within this narrative, mapping their objectives and effects. The sample is constructed beginning with the textual devices published on Facebook’s institutional websites: Facebook Blog and Facebook Newsroom. Following the reading of more than 1,000 texts of Facebook and other agents (users, content producers, media, activists, etc.), the most relevant publications were selected, emphasizing situations of change, conflict and controversy. The research approach, which was based on science and technology studies (STS) and actornetwork theory (ANT), involved constructing a body of procedures used to describe the performative character of texts. The current study found that during the development of the News Feed, Facebook’s notion of algorithm has gone through three different phases, referred to here respectively as the Edgerank Algorithm, Right Algorithm and User-centered Algorithm. One of the most interesting findings was that the changes in the News Feed are primarily oriented towards the objective of creating engagement by keeping users connected to Facebook. Engagement is an important commodity within the rationality that emerged from this scenario. It is argued that the News Feed development may be seen as a continuous flow. Another important finding was the notion called algorithmic norm, as a normative logic of visibility that rules the relationship between content producers and the News Feed. The algorithmic norm tends to enact specific judgements and to punish content producers who do not follow what Facebook calls good practices.

Submitted by Alisson Mota (alisson.davidbeckam@gmail.com) on 2015-06-17T19:41:20Z No. of bitstreams: 1 Dissertação - Maria Ione Feitosa Dolzane.pdf: 3020459 bytes, checksum: 3d03c826ee61134d0699b7c6e4d69ad3 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-06-18T18:04:06Z (GMT) No. of bitstreams: 1 Dissertação - Maria Ione Feitosa Dolzane.pdf: 3020459 bytes, checksum: 3d03c826ee61134d0699b7c6e4d69ad3 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-06-18T18:24:50Z (GMT) No. of bitstreams: 1 Dissertação - Maria Ione Feitosa Dolzane.pdf: 3020459 bytes, checksum: 3d03c826ee61134d0699b7c6e4d69ad3 (MD5) / Made available in DSpace on 2015-06-18T18:24:50Z (GMT). No. of bitstreams: 1 Dissertação - Maria Ione Feitosa Dolzane.pdf: 3020459 bytes, checksum: 3d03c826ee61134d0699b7c6e4d69ad3 (MD5) Previous issue date: 2015-02-27 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The current work presente the cartographic study‟s result developed during the period between 2012 and 2014, at Education College of Amazonas Federal University, in order to map and discuss the pedagogical practices performed in a open environment with the aid of technological mediators. More accurately, the research presents the cartographic letter of the performed way by a training teachers program, known as PNAIC, developed in this open management format with the aid of technological mediators and points to new practices that reconfigure the educational institute function with regard of the training programs management through the use of Digital Communication Technologies, allowing a transparent e participative work of the actions through the digital platforms open management. / O presente trabalho apresenta o resultado de um estudo cartográfico desenvolvido no período entre 2012 a 2014, na Faculdade de Educação da Universidade Federal do Amazonas, com o objetivo de mapear e discutir as práticas pedagógicas realizadas em ambiente aberto com auxílios de mediadores tecnológicos. Mais precisamente a pesquisa apresenta a carta cartografada do caminho realizado por um Programa de Formação de Professores, o PNAIC, desenvolvido nesse formato de gestão aberta com o auxilio de mediadores tecnológicos e aponta para novas práticas que reconfiguram o papel das instituições de ensino no que se refere à gestão de programas de formação a partir do uso de Tecnologias de Comunicação Digital, as TCD‟s, permitindo um trabalho transparente e participativo das ações a partir da gestão aberta em plataformas digitais.

Les plateformes de financement participatif (« crowdfunding ») permettent auxentrepreneurs de faire financer leurs idées en contactant directement de petits investisseurset des consommateurs potentiels. Cette thèse porte sur le fonctionnement de cesplateformes d’un point de vue économique, en particulier, sur les stratégies mises en placepar les plateformes et les entrepreneurs dans ce marché. Cette thèse est organisée en deuxparties. La première partie se focalise sur le marché du financement participatif et lesstratégies de compétition des plateformes. La deuxième partie se consacre aux incitationsdes entrepreneurs et les potentielles barrières à son entrée – et donc au développement dece marché. Tout d’abord, nous discutons la caractéristique des plateformes de financementparticipatif d’après la théorie des marchés « bifaces ». Nous soulignons le rôle decoordination de ces plateformes à partir de différentes structures de prix et de règlesspécifiques qui régulent la participation d’entrepreneurs et d’investisseurs. Nous soulignonsl’état de l’art de la littérature existante pour comprendre les incitations des entrepreneurs etdes investisseurs de participer à ces plateformes, les outils mises en place pour réduire lesasymétries d’information, et les biais des investisseurs par rapport aux caractéristiquesphysiques des entrepreneurs. Le deuxième article étudie le défi des plateformes bifacesd’équilibrer « quantité » et « qualité » des agents des deux côtés et en même temps tenir encompte la compétition. Nous étudions en particulier comment une stratégie d’attirerd’avantage d’entrepreneurs d’un côté peut réduire la qualité de l’expérience des usagers. Letroisième article est consacré à démontrer empiriquement la valeur informationnelle dufinancement participatif pour les entrepreneurs. Avant le lancement d’un nouveau produitsur un marché, les entrepreneurs font face à des fortes incertitudes qui peuvent être paillésavec le « feedback » reçu des campagnes du financement participatif, ce qui constitue uneincitation de plus pour participer à ces marchés. Le quatrième et dernier article présente uncontrepoint de ces incitations, et interroge les barrières à l’entrée sur ces marchés. Enparticulier nous étudions les barrières en termes de temps qui doit être consacré à unecampagne de financement participatif et qui peut décourager une partie des entrepreneursde chercher cette alternative. Pour conclure, nous discutons de l’implication de nosrésultats. / Crowdfunding platforms allow entrepreneurs to directly contact small investorsand potential consumers to help them finance their ideas. This thesis dedicates tounderstanding the dynamics of these platforms from an economic perspective. We areparticularly interested in comprehending the entrepreneurs’ and platforms’ strategies in thismarket. This thesis is composed by four scientific articles organized in two parts. The firstpart focuses on analyzing the crowdfunding market dynamics and the design and strategiesof crowdfunding platforms. In the first article (Chapter 1), we discuss the characteristic ofcrowdfunding platforms based on the theory of two-sided markets. We underline thestrategies platforms use to perform their coordinating role of the market. Based on thecurrent literature, we analyze the incentives and disincentives of entrepreneurs andinvestors to participate on these platforms as well as the instruments to reduce informationasymmetries and the potential biases on the investors’ screening process in relationship toentrepreneurs’ physical characteristics. The second article (Chapter 2) examines thechallenge of crowdfunding platforms to balance “quantity” and “quality” on both sides ofthe market, and at the same time accounting for competition. In particular, we examinehow a strategy to attract more entrepreneurs to one side can reduce platforms’ thecompetitive advantage and potentially deteriorate users’ experience. The second part of thethesis is devoted to the incentives and disincentives for entrepreneurs to join crowdfundingplatforms. In the first article of the second part (Chapter 3 of this thesis), we empiricallydemonstrate the informational value of crowdfunding for entrepreneurs. Before launchinga new product in a market, entrepreneurs face high uncertainties that can be reduced withthe “feedback” received from crowdfunding campaigns. Therefore, the informational valueof crowdfunding serves as an additional incentive to entrepreneurs besides obtainingfinancial support for their ideas. The fourth and last article aims at pointing outdisincentives to join platforms, in particular how the need of allocating scarce time andattention to campaigns may discourage some entrepreneurs from seeking this alternative.To conclude, we summarize the implications of the main findings and suggest avenues forfuture research

Esta tese acompanha a construção do Feed de Notícias do Facebook ao longo dos seus primeiros 10 anos (2006-2016) com o objetivo de descrever as formas como o mecanismo e a noção de algoritmo são definidos ao longo do período estudado. São analisados os conteúdos digitais, chamados de dispositivos textuais, que compõem publicamente o que o Feed de Notícias é e faz, descrevendo os atores implicados na composição dessa narrativa, mapeando seus objetivos e seus efeitos. A amostra analisada toma como ponto de partida os dispositivos textuais alocados em dois espaços digitais institucionais do Facebook: Facebook Blog e Facebook Newsroom. A partir da leitura de mais de mil publicações digitais do Facebook e de outros agentes (usuários, produtores de conteúdo, imprensa, ativistas etc.), foram selecionadas as publicações mais relevantes ao estudo, escolhidas com ênfase em eventos e circunstâncias de negociação ou mudança. A abordagem aqui construída representa uma composição de perspectivas dos estudos de ciência e tecnologia (STS) e da Teoria Ator-Rede (TAR). Trata-se do conjunto de procedimentos utilizados na descrição do caráter performativo dos textos. Na análise realizada na tese, são identificados três momentos distintos da construção da noção de algoritmo ao longo da trajetória do Feed de Notícias, chamados de Algoritmo Edgerank, Algoritmo Certo e Algoritmo Centrado no Usuário. Ao mesmo tempo, é apresentada a formulação do Feed de Notícias como um fluxo constante. É argumentado que as transformações no mecanismo são orientadas para gerar engajamento e manter usuários conectados ao Facebook. Engajamento é, na racionalidade emergente da construção do Feed de Notícias, uma mercadoria resultante de sua ação. Outra noção relevante decorrente da análise é a ideia de norma algorítmica como lógica normativa de visibilidade que busca regular o relacionamento entre produtores de conteúdo e o mecanismo, punindo os que não seguem as chamadas boas práticas. / This study follows the Facebook News Feed construction throughout its first ten years (2006– 2016). The objective of this research is to describe the way this mechanism and the notion of algorithm were compounded, enacted and transformed during that period. This is achieved through an analysis of the digital content (referred to here as ‘textual devices’) that publicly constructs what the News Feed is and how it functions. This analysis describes the actors involved within this narrative, mapping their objectives and effects. The sample is constructed beginning with the textual devices published on Facebook’s institutional websites: Facebook Blog and Facebook Newsroom. Following the reading of more than 1,000 texts of Facebook and other agents (users, content producers, media, activists, etc.), the most relevant publications were selected, emphasizing situations of change, conflict and controversy. The research approach, which was based on science and technology studies (STS) and actornetwork theory (ANT), involved constructing a body of procedures used to describe the performative character of texts. The current study found that during the development of the News Feed, Facebook’s notion of algorithm has gone through three different phases, referred to here respectively as the Edgerank Algorithm, Right Algorithm and User-centered Algorithm. One of the most interesting findings was that the changes in the News Feed are primarily oriented towards the objective of creating engagement by keeping users connected to Facebook. Engagement is an important commodity within the rationality that emerged from this scenario. It is argued that the News Feed development may be seen as a continuous flow. Another important finding was the notion called algorithmic norm, as a normative logic of visibility that rules the relationship between content producers and the News Feed. The algorithmic norm tends to enact specific judgements and to punish content producers who do not follow what Facebook calls good practices.

Esta tese acompanha a construção do Feed de Notícias do Facebook ao longo dos seus primeiros 10 anos (2006-2016) com o objetivo de descrever as formas como o mecanismo e a noção de algoritmo são definidos ao longo do período estudado. São analisados os conteúdos digitais, chamados de dispositivos textuais, que compõem publicamente o que o Feed de Notícias é e faz, descrevendo os atores implicados na composição dessa narrativa, mapeando seus objetivos e seus efeitos. A amostra analisada toma como ponto de partida os dispositivos textuais alocados em dois espaços digitais institucionais do Facebook: Facebook Blog e Facebook Newsroom. A partir da leitura de mais de mil publicações digitais do Facebook e de outros agentes (usuários, produtores de conteúdo, imprensa, ativistas etc.), foram selecionadas as publicações mais relevantes ao estudo, escolhidas com ênfase em eventos e circunstâncias de negociação ou mudança. A abordagem aqui construída representa uma composição de perspectivas dos estudos de ciência e tecnologia (STS) e da Teoria Ator-Rede (TAR). Trata-se do conjunto de procedimentos utilizados na descrição do caráter performativo dos textos. Na análise realizada na tese, são identificados três momentos distintos da construção da noção de algoritmo ao longo da trajetória do Feed de Notícias, chamados de Algoritmo Edgerank, Algoritmo Certo e Algoritmo Centrado no Usuário. Ao mesmo tempo, é apresentada a formulação do Feed de Notícias como um fluxo constante. É argumentado que as transformações no mecanismo são orientadas para gerar engajamento e manter usuários conectados ao Facebook. Engajamento é, na racionalidade emergente da construção do Feed de Notícias, uma mercadoria resultante de sua ação. Outra noção relevante decorrente da análise é a ideia de norma algorítmica como lógica normativa de visibilidade que busca regular o relacionamento entre produtores de conteúdo e o mecanismo, punindo os que não seguem as chamadas boas práticas. / This study follows the Facebook News Feed construction throughout its first ten years (2006– 2016). The objective of this research is to describe the way this mechanism and the notion of algorithm were compounded, enacted and transformed during that period. This is achieved through an analysis of the digital content (referred to here as ‘textual devices’) that publicly constructs what the News Feed is and how it functions. This analysis describes the actors involved within this narrative, mapping their objectives and effects. The sample is constructed beginning with the textual devices published on Facebook’s institutional websites: Facebook Blog and Facebook Newsroom. Following the reading of more than 1,000 texts of Facebook and other agents (users, content producers, media, activists, etc.), the most relevant publications were selected, emphasizing situations of change, conflict and controversy. The research approach, which was based on science and technology studies (STS) and actornetwork theory (ANT), involved constructing a body of procedures used to describe the performative character of texts. The current study found that during the development of the News Feed, Facebook’s notion of algorithm has gone through three different phases, referred to here respectively as the Edgerank Algorithm, Right Algorithm and User-centered Algorithm. One of the most interesting findings was that the changes in the News Feed are primarily oriented towards the objective of creating engagement by keeping users connected to Facebook. Engagement is an important commodity within the rationality that emerged from this scenario. It is argued that the News Feed development may be seen as a continuous flow. Another important finding was the notion called algorithmic norm, as a normative logic of visibility that rules the relationship between content producers and the News Feed. The algorithmic norm tends to enact specific judgements and to punish content producers who do not follow what Facebook calls good practices.