+2  A: 

You can read all about the Facebook APIs on their developer website at http://developer.facebook.com/.

Specifically, the Status.set method is probably what you're looking for.

mlambie
I know the link to the facebook dev stuff. I'm hoping to understand some of the concepts. So is facebook Connect the equivalent to Twitters OAuth ? Once i've authorised with Facebook that my website can do stuff, on behalf of the user .. will I get an AccessToken which i can then use to auto-authenticate with Facebook with i do a Status.set thingy? /me hasn't checked out the doco for Status.set.. just yet ... /me runs off to do that.
Pure.Krome