Six.0.Tree-skiOn a related note, if you lose your wallet/phone/iPod and someone takes the time to hunt you down and return the item, there should be some sort of tip involved. There are plenty of people out there that wouldn't hesitate to keep your shit. I've returned 2 wallets 2 iPhones and an iPod with just a "thanks." I know tipping is something that's kind of overlooked because it's your phone/wallet to begin with, but it's a nice gesture to leave something. I know karma will catch up to those who do nice things but 20$ is nice on top of that.
Was at the movies last night, guy left his iPhone 5 on the counter, I ran after him and gave it back, just got a thanks. Personally I expected nothing less, nor did I want anything else. Doing the right thing doesn't mean you deserve a tip. You did what you should have done, nothing else. However, if someone sent me back my wallet I had lost with around $500 in it and none was taken. I would send them back a nice thank you and some cash. But for just trying to get phone/whatever back to its owner, don't expect a tip.