I don't think I've ever had any hatemail but I have been given a negative rep just for liking a band. I posted in a thread giving my opinion on how I liked them and had a neg rep saying "No." It was about four years ago and I'm sure it's the last neg rep I received. I remember it because it really did not make any sense to me, some people just don't know how to accept other's opinions. It's not the neg rep that bothered me, because back when I was a noobie I got tons of it lol. It was the only one that made me think "wow, some people really are stupid".

I've had a bit of hateful comments on youtube but they're quite funny because most of the time they come from people who are younger than I am (or seem it anyway) and don't have any real argument towards me, they just sprout nonsense.