Is there a rule on 2+2 that someone can not use someone's avatar, I 4 the last 5 years have changed my avatar from a less then handful of few yet because someone also found has the same avatar I am getting PM's from mods to change My avatar, so if anyone ever uses 1 of the 3 I use can I just tell them they have to stop using that avatar . . .
It is poor form to use an avatar of a long established member whose posts are recognized quickly by their avatar. It is in those cases that someone would be asked to change theirs or have it deleted by a mod. So to answer your question directly, yes, there is an unwritten (now written) policy not to steal someone's avatar.
I'm sort of curious why you stole chop's avatar when you had other more awesome avatars available to you? For example look to the left of this post. If I was going to steal an avatar I probably would choose for