I love the "someone must be using my account" excuse. Classic self pwnage 
exactly. it makes sense until you really think about it.
"yeah, someone else must be using my account to just sit around on getbig simply to make it look like i'm browsing, but not post. oh, and they must ALSO be watching MD, because that way they knew to log me out when you brought it up just to make me look even worse. those crafty bastards!"