At least two people I’ve spoken to – and a few others I’ve heard from – say that their facebook profiles have disappeared. They are unable to log in and their friends tell them that they’ve disappeared from contact lists and group memberships.
The problem with facebook being a data black hole (data goes in, it doesn’t come out) is that there’s no way to back-up any of the content that you’ve put in there.
FB carefully now.
UPDATE: Some of the original profiles are back, but people can’t login. This suggests a database failure and restore from back-up. I’ve not heard any communication ffrom FB on this.