Back to tipping...this thread prompted me to consider if I reward enough for good service.  I have my laundry picked up and dropped off.  Most often I don't see the driver.  But when I do he's friendly and makes suggestions to improve the service he provides me.  He made sure I have his direct line.  I travel frequently and often seem to have laundry about to be delivered before I leave on a trip.   So just in time delivery is important to me.  I'll add him to my tip list this year.