1. Bad service? small tip. But it has to be *really* bad. I've never left zero tip, except when I was in college and broke.

2. Average service? 15-20%.

3. Excellent service? Whatever I think it's worth above 20%.

That's in restaurants. As a rule, I don't tip in other situations where some people do -- grocery baggers, for instance. Call it a quirk, but I'd rather bag my own groceries than tip someone to do it.

__________________
Scarred survivor of the April 2008 Mod War.