I try to overtip when I can. Prior and through college, I got by working in the service industry. Paychecks were appreciated because I could just pay rent with them. But I ate and lived on my tip money. I know that these folks are being stiffed left and right, so I try to make up for it just a little if I can by providing a little extra... and for really great service, I'll go over the top with an extra ten spot. It seems that the universe always pays me back for what extra I put out. At least I haven't gone broke yet!