Well, well, well. Microsoft has some tricks up it's sleeve with Silverlight (and maybe .net, we'll see), but take a look at what they did in just 72 hours with Facebook's new API.
It' s not open to developers (yet) but when it is - who the hell is going to actually GO to facebook.com? It'll be like Twitter how I get my data by using TweetDeck and Twittergadget.