As you all may have noticed facebook was having some problems today, as mentioned here. Interestingly when I tried to delete my status message today, the prompt I got was as usual, "Delete post: Are you sure you want to delete this post?". But when I clicked yes, another message popped up "Unable to hide minifeed story: Failed to hide mini-feed story". After trying thrice it did delete. But what does this error message point out? Facebook never deletes stuff in real; it just hides them from your view.
So I feel unlike twitter, facebook deletion is not a permanent delete, but a mere hide. Once you put it there, it will be there for an unknown period of time. Of course, it is obvious that there is no way of permanent deletion* of facebook accounts. Aren't these a violation of user-rights? I'd better go and read the user agreement of facebook (only if I am that much jobless).
* Update: Seems they have enabled the permanent deletion option at the moment. Give it a try!