I also dislike it when the grocery store runs "charity promotions" where they ask if you want to add a dollar to your bill for "Children's Miracle Network" or somesuch. I always want to ask them exactly how much of the money goes to the charity (and what goes to "overhead" - which is a standard question I ask when someone is soliciting money for a charity) but there are people in line behind me and I don't want to be "that person" so I almost always say "No."
Even worse, in my opinion, is when schoolkids (with their parents) are in front of the store asking for donations for sports, etc. I don't mind car washes, bake sales, etc., but just asking for a handout without doing anything to earn it sets a bad example. (Living in NJ, I just tell them that my property taxes are my donation, at which point I get blank stares from all of them :huh: .)
On a nicer note, I was in Philly just for the day a while back and decided to use one of my lounge coupons at 30th Street. As I passed the redcap booth, I waved and said "Hi" to them and said I wasn't traveling that day, just using the lounge. At which point, one of my favorite redcaps said there was no need for me to go up those steep stairs, and he took me up on the elevator. When I tried to tip him, he refused, waved, and went back downstairs before I could insist!