Two of my friends have had their Facebook accounts disabled in the last few weeks with no warning and it's a head shaker.
The first person chucked out was Mitch Joel. His situation was detailed on his podcast, Six Pixels of Separation, a few weeks ago. The quick version is that he was reconnecting with a bunch of old friends and adding them as contacts. Apparently he added too many at one time and Facebook viewed him as a spammer and disabled his account. I'm all for spam measures but let's at least have a warning pop up!
Disabling user accounts with no warning or grace period seems an awfully harsh line to take. Can't really think of a good reason why they'd be doing this. Anyone have any ideas?