Funny thing is that on Alliance side Cenarius server I got literally about 5-10 hate msgs an hour. Most were just "loser" or "no life" comments but still...
Anyways on Horde side Cenarius server I've gotten a couple of very mild "wtf? dude you are paying for all those accounts?!?" "that's ridiculous" but for the most part people will just run up, watch me for like 2 mins, then run off. Truly amazing the difference between horde and ally on this server.

Although last night I did get some guy follow me on his epic flyer for about 15 mins, logged off, and then 1 min later I'm getting flamed by some level 1 alt telling me I need to get a life. So I msg'ed back "You mean a life that consists of following around complete strangers for damn near 20 mins, then taking the time to come over to horde side and flame him for doing something in a video game that's completely within the maker's rules? NO THX!" /ignore