What happens to my post when I press the "Edit" button? Can others still read the old post while I'm editing? Does the old post get pulled temporarily while I edit? Or does the edited version instantaneously replace the old version when I hit the "save" button? Just wonderin' because I edit myself...a LOT!!! Thanks!

EDIT: There doesn't seem to be a single moderator on line right now. SEE?!?!? I can't help but edit! Call me "Second Thought"!!!