How to find out why OOty is called OOty.
It made me
more aware 
"Googling is the default, but there are more fun ways to find out."
How I did it: aprilsunshinegal did it first, I just followed her lead... it is not so hard or even bad to ask someone, it could just get annoying to them if everyone asks, so a written / posted explanation is the way to go.
Resources: 00ty
