'Facebook fatigue' kicks in as people tire of social networks according to The Register. The average length of time users spend on all of the top three sites is on the slide. Bebo, MySpace and Facebook all took double-digit percentage hits in the last months of 2007. December could perhaps be forgiven as a seasonal blip when people see their real friends and family, but the trend was already s...

Twubble searches your Twitter friend graph and picks people you might like to follow. This is the kind of thing that Facebook should let developers do. Due to the restrictive developer API, however, you can only see friends of friends who are friends with you. According to Twubble, I should make friends with factoryjoe!...