i read the restaurant tipping thread... but what about places like coldstone (or starbucks or other places like that) where you stand at the counter... they make your ice cream (or coffee) and you pay... and leave? they all have their little tip jars out... do you tip at places like that too? and if so... how much? do you through 15% of your $4.00 ice cream in the jar? do you through in a buck? do you not tip at places like that????