Would you expect the average Facebook user to be interested in interacting much with friends? Yes, definitely. But in general, at least among the largely growi

Would you expect the average Facebook user to be interested in interacting much with friends? Yes, definitely. But in general, at least among the largely growing high school contingent on Facebook, I generally wouldn't expect much sophistication... the interactions I've observed are pretty similar to what you see on MySpace. Facebook is growing in the older-than-college age group too, though, and naturally those users are going to act more like adults. Writing facebook applications is pretty easy, so one great way to test your idea would be to just put out a prototype and see what happens.