[fraserbrown]

Give the cash back, you got it from somewhere they will notice and not from a table. I have given back extra money twice, the first time it happend I got a few free drinks out of it and the second I was told that there was no way to verify what I was saying and to just keep it, mind you the first time was for about $150 and the second was only like $20 or so. It never hurts your rep to do the right thing and its money you would never have had in the first place.