User Profile
Users can create profiles with photos, lists of personal interests, contact information, and other personal information. Users can communicate with friends and other users through private or public messages and a chat feature. They can also create and join interest groups and "like pages" (called "fan pages" until April 19, 2010), some of which are maintained by organizations as a means of advertising , A 2012 Pew Internet and American Life study identified that between 20–30% of Face book users are "power users" who frequently link, poke, post and tag themselves and others
