Signs you are a good tipper?

Darren Barefoot blogged about tipping today and linked to Signs you are a good tipper on Stained Apron. I have to say that none of these points would indicate tip-size (except maybe ordering water with lemon) but they do indicate good manners. Maybe "Signs you weren't raised in a barn" would be more appropriate.

Tipping gets really ugly when there is a group splitting a bill. Many times, I'm sure I looked like a complete tightwad because someone else collected everyone's money then failed to leave a reasonable tip. I soon learned to ask for separate bills when out with those "friends".