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This work is focusing on reasons for protection of email addresses against automatic recognition, which aims to find other recipients of spam. Includes description of how this protection can be increased and these methods are evaluated in terms of level of protection and conservation addresses accessibility of websites. The part of this work is to determine the current status of the website addresses of public universities in terms of utilized methods of record. Status on these sites is investigated using application, which in addition to finding addresses, finding the method of writing on a selected sample sites. The various methods used to write addresses are evaluated on the results of the application and other recommendations for improvement are discussed.