Tipping - Why & Who

[GonzoStyle]

I give my mailman 50 bucks on xmas. I always tip 20% but I agree with arpi if the service sucks i'll leave less or at times whatever spare change I have in my pock sans any quarters. I can't leave like a dollar though, I seen people do it on small checks but I think to myself what can a fuckin dollar get me besides a 20 minute call? On a 10 dollar bill I leave like 3 or 4 bucks. Above 20 bucks I go at 20 - 30 %. It's a hard job and if someone deserves it an extra few bucks won't kill me.