The tipping point

How much do you generally tip a cabbie?

Nothing 0%
I round up the change 29%
15 percent 56%
I never know exactly and throw him a wad 15%

How much do you tip at a restaurant?

Nothing 0%
15 percent 11%
20 percent 68%
I double the tax 21%

How much do you tip the delivery guy?

Nothing 3%
A buck 27%
15 percent 57%
20 percent 13%

If you have a doorman, how much do you tip each him during the holiday season?

Nothing 35%
$10 to $50 38%
$50 to $100 23%
$100+ 4%