The Seindfeld episode is a classic and love watching that one! Anyway, I think tipping in America is becoming just way to common, esp. in big cities. I always hate going to New York or Chicago b/c basically everybody is looking for a tip. For skycaps, I think they should get a better wage by the airline (which we know probably won't happen) b/c their service really isn't all that valuable in my opinion. When I do use a skycap, which is rarely, I do tip them. I am fully capable of rolling my baggage and using the kiosk or check-in agent. Just my 2 cents again!