5000 Friends on Facebook, Now What?
Tuesday, 20 July 2010 | by Pat's Picks

Facebook caps the number of friends you can have at 5000. A little research revealed that officially, the policy is designed to make sure people befriend real people and that 5000 is considered a reasonable ceiling for even the most gregarious of people. Other sources say the limit is due to some ?back-end? technical reason. But apparently, it’s not reasonable for everyone. The New York Post profiles several people who’ve reached their limit. One of them admits he only knows about 500 of his 5000 friends.
There was an interesting article in the Daily Mail about a month ago about this friend limit. According to scientists, humans can only really deal with 150 friend relationships. They say even people with large numbers of friends only really interact with a fraction of them. I love that Facebook has become so ubiquitous that scientists are studying it.