隨著網路時代的來臨，人際互動與溝通模式產生新的轉變，世界各地的網友可以藉由網路平台，表達自己的想法並且結交志同道合的朋友。喜歡特定品牌的網友們也會自行集結成立品牌社群，社群中的成員會以各種型式的創作與眾人分享其對於該品牌之愛好。有鑑於台灣寬頻網路普及率在世界名列前茅，品牌社群如雨後春筍般相繼成立，網友們也紛紛透過發表與瀏覽使用者創作與品牌社群成員互動，因此本研究目的在於找出影響網友加入品牌社群動機，及影響社群成員創作與消費使用者創作的因素，最後探討參與使用者創作對於品牌認同和社群認同的影響。 本研究以結構方程式來驗證Clary, Snyder, Ridge, Copeland, Stukas, Haugen, and Miene (1998) 功能性動機架構應用於品牌社群使用者創作之動機與態度，Eccles and Wigfield (1995) 的期望─價值理論對於使用者創作認知價值與態度間關係，以及Bagozzi and Dholakia (2005) 的品牌社群成員對於使用者創作態度及其使用者創作參與意圖的關聯，參與意圖對品牌與社群產生認同感之差異。 本研究有以下重要發現： 1. 社群導向加入動機會正面影響社群成員創作與消費使用者創作之態度，品牌導向加入動機則無顯著影響。 2. 品牌社群成員認為在社群中發表或瀏覽使用者創作越有價值，會更願意參與使用者創作的活動。 3. 對於創作使用者創作具有正面態度的社群成員，其參與使用者創作的意願越強，消費使用者創作態度較無顯著影響。 4. 社群成員參與使用者創作意願會強化品牌認同與社群認同，亦即越有意願參與使用者創作的成員對於品牌與社群之認同感越高。 / With the coming of the Internet age, people begin to change the way they communicate. People around the world can share their opinions on the Internet platform. Brand fanatics gather together and establish brand communities, and create different kinds of user-generated content to express their affections on the particular brand. In Taiwan, the assessiblity rate of Internet is occupied the leading position in the world. Moreover, brand community members interact with other members via publishing and consuming user-generated content. Thus, the purpose of the research is to find out the factors that influence brand community participation motivation, creating and consuming user-generated content, and the relation between user-generated content participation intention and brand identification and community identification. The Research is based on the conceptual framework of Functional Motivation proposed by Clary, Snyder, Ridge, Copeland, Stukas, Haugen, and Miene (1998) to investigate the relation between motivation and attitude toward user-generated content. With the Expectation – Value Theory proposed by Eccles and Wigfield (1995) to find out the influence of perceived value on attitude. Finally, the research will follow Bagozzi and Dholakia (2005) conceptual framework to discuss difference between the brand identification and community identification from the user-generated content participation intention. The research induces the following findings: 1. Community Oriented Participation Motivations will positively influence the brand community members’ user-generated contetent creation and consumpation attitude. Brand Oriented Participation Motivation will have no influence on the user-generated contetent creation and consumpation attitude. 2. The brand community members will base on the perceived value of creating and consuming user-generated content to engage user-generated content activity. 3. The attitude toward creating user-generated content will positively influence on the user-generated content participation intention. There is no significant influence from the attitude toward consuming user-generated content. 4. The user-generated content participation intention will reinforce the brand identification and community identification.

隨著資訊時代來臨、社群媒體普及，現今的消費者有能力從網路尋找多元的資訊進行購買決策，消費者也能互相交換資訊。YouTube的時尚美妝影片數量多、內容豐富，消費者在尋找產品或使用教學的影片時，會將其作為搜尋來源之一，並相信這些內容不具商業利益，客觀且公正。 美妝YouTuber樂於創作影音內容，分享產品資訊、購物經驗、和生活事物等議題，進而培養出一群訂閱的觀眾，成為具社群影響力的網路名人；然而這些YouTuber如何影響消費者、為何能吸引特定族群的消費者，目前國內外相關的研究仍十分稀少。 本研究以美妝影音部落格和美妝消費者為研究對象，探討「美妝消費者的購買決策過程，及其如何受到YouTuber之影響」，採用質性的網路民族誌 (netnography) 作為研究方法，先搜集三個YouTube熱門美妝頻道的網路資料，參與留言區的討論，再訪談十六位千禧世代的美妝消費者。本研究發現：一、創作者和觀看者透過YouTube凝聚成美妝「社群」；二、美妝YouTuber具備「發起者」和「影響者」的角色；三、美妝消費者的行為和態度可能受到人氣YouTuber影響。 / Nowadays, consumers search information about products, prices and distribution on the Internet before their purchase decisions so that social media has radically changed the communication landscape. Consumers are able to share their purchase experiences online and interact with other users. More and more users are using YouTube as a search engine as well as looking for makeup tips, tutorials, and product recommendations because consumers would believe these user-generated contents are reliable and trustable. The aim of this research is to explore how YouTubers of beauty industry in Taiwan, have influenced their viewers and to what extent this influence on the purchase decision process. This study uses a qualitative approach ‘netnography’ as the main research methods to collect data. Three YouTube beauty channels were observed and participated; additionally, 16 in-depth interviews with millennial consumers were conducted. The research finds out that YouTube beauty channels can be seen as communities where relationships between YouTubers and viewers is formed. YouTubers are the initiator and influncer on the purchase decision journey. The study also found that the popularity of YouTuber may affect consumers’ behaviors and attitudes.