I posted on a yahoogroups list about a convention I went to in 2000 that I lost my shirt at (well, about $1000....) in reply to a 'does this happen often?' query and now I feel terrible, 'cause the guys in charge were really nice about it, and I'd consider them friends. I didn't mention their names or the location, and I even tried to put a positive spin on things, but I still feel badly for dissing their con in public.
It was justified, it feels good to rant a little, I wasn't that accusatory, but I still feel like scum.
There is a Tanith Lee (I think) book about a prince who is cursed to be a raven an hour a day and his sister, who is cursed with being so nice it's silly. I really relate to that poor girl.