[wheaties]

Wait, you're telling me they'll auto log you back in? I recently found out I have a facebook account. I had no idea I had one but after a password reset and visit to that page I figured in 14 days it was a settled matter. Wtf, facebook!? Seriously?

[kybernetyk]

I don't think they perform an explicit auto log in to cancel your delete request but mis-clicking a like button (or clicking on a harmless LOOK AT THAT FUNNY CAT PICTURE-URL in an IM chat, etc) might trigger a log in.

They certainly track you even if you're not logged in so who knows what javascript trickery they're up to to make logging in 'easier'.