[mirkules]

Besides agreeing with your point about "coolness", I also thought about the "stuff I'm interested in" vs. "stuff other people are interested in". It struck me as an insightful sentence that perfectly describes their respective social networking models.

The argument comes down to reference/reinfocement vs. discovery. The former provides reference to your knowledge and interests and reinforces them. The latter lets you discover new knowledge. There is definitely room for both ideologies, as they are both kind of necessary for social interaction. Twitter: find people with same interests, Facebook: connect with those people on a more personal level, and find out their interests. Of course, I am neglecting the fact that you can find out other people's interests on Twitter, too, but Facebook strikes me as more of a passive way to do that -- Twitter just moves too fast for that (for an occasional user, like me).

So, I think while there are many, many problems with Facebook, their model of interaction might not be one of them.