In theory. I've deleted my Facebook account. Few years later needed to create new one and used same e-mail address. Guess what welcomed me! My old account! Heck

In theory. I've deleted my Facebook account. Few years later needed to create new one and used same e-mail address. Guess what welcomed me! My old account! Heck, even posts I had deleted and whole journal (or however its called) related to them, yes it was back again, waiting to be clicked "unhide".