Replying to Stealing Icons

I'm not really in danger of having this happen, but one of the most common posts I see on NS is 'Hey asshole, you stole my icon'. Should there be a rule about this or something, like whoever has the most posts gets to keep the icon? Because it's hard to figure out who had it first sometimes... Just something I randomly thought of when I wasn't doing anything interesting...

I realize I'm setting myself up for someone to steal my icon. Yeah, you're thinking about it. I know. Don't be a bastard.