Or anyone else working in a field where a certain percentage of bad apples give the rest a bad name.

My 20-yr old is, admittedly, a walking target for snake-oil salesmen. Several times she has had to call me from a mechanic's shop to double check that she isn't being sold something she doesnt need (she was).

Today she came home from getting a "free x-ray" at the chiropractor to tell me how messed up her back is. Fortunately, chiropractic treatments three times a week for the next year will fix her lordosis (swayback). What a deal.