What are users?

Some articles on users, user:

Winny - Anonymity
... At the time of the two users' arrests, the Kyoto Police claimed to have "analyzed Winny's anonymity features" to track the users down, but did not disclose ... where Winny did not provide anonymity that the Police used to track users down ... file sharing feature, the Kyoto Police switched to a different method, namely tracking users via Winny's integrated forum feature ...
Where's George? - Overview
... To track a bill, a user enters the local ZIP Code, the serial number, and series of any US currency denomination ... Users outside the US also can participate using an extensive database of unique codes assigned to non-American/Canadian locations ... the distance between sightings, and any comments from the finders (called "user notes") ...
Fark - Traffic and Users
... Fark's Alexa rating is 2,310, with the average user spending 5.8 minutes per day on the site and 5,337 sites linking in. 67.2% of users originate from the United States ... The site receives approximately 2,000 story submissions per day from users, and approximately 50 of them are displayed on the main page of the site, or "green-lighted" ...
Friendster - Site Transformation
... photos, messages, comments, testimonials, shoutouts, blogs, forums and groups that the users may have had in the past may no longer be part of their Friendster ... An exporting tool is provided to back up the information of the user account ... Deadline given to users to export their photos was extended to 27 June 2011 ...