Impressive Facebook Platform

I've been playing with Facebook for a few days and am impressed. What I am more impressed with is Facebook has transformed itself into a platform after a couple of months opened to application developers. There is a mind-boggling momentum at play, not only in terms of user signups, but in the excitement around developing for the platform. A lot of web startups are adding a Facebook experience, and at the same time, a number of new applications are popping up (every day... literally!) that are leveraging the power of the social network in creative ways. It will be interesting to see how Facebook holds up over time compared to other networks such as MySpace.