Facebook recently opened up its API so that programmers could make neat little tools that work with it. Their first few examples were pretty weak (who’s going to use Facebook to try to recollect on a debt?) but there are some new ones worth looking at:
Interesting Connections – shows you people you might not think knew each other
Friend Mapper – see where your friends are from on a map
(if this doesn’t sum up the University of Maryland I don’t know what does)
Firefox toolbar – for the extremely addicted
More, including like 8 dating tools. Silly programers, Facebook’s for stalking.