When you start a thread that has no significance whatsoever,

Just kidding!
I'm definitely one of the ones that needs to learn to step away.... My daily rate just keeps creeping higher and higher. It's just so much easier to come on here for hours instead of opening up my dreaded physiology or world history book.
----------
To add to the list....
When you see people and you remember/refer to them by their screen name (not that I know anyone like that...)