What Your Facebook Account Says About Your Brain

Establishing and maintaining many social relationships requires a great

deal of brainpower. One must remember many names and faces, keep many

individual memory files with information about what these people did in the

past, and how and when they did it, constantly update information about the

quality of the relationships with these people

http://www.psychologytoday.com/blog/games-primates-play/201203/what-your-facebook-account-says-about-your-brain