Blackrock PvP US has some very disturbing/strange players. (But what realm doesn't?) I remember when I was going to level up on there and then I saw this guy spamming trade to this WoW forum link,I copied it and...he had made a huge list of this 13 year old girls info(Email,twitter,myspace,all of her alts,bankalts)and pics of her doing some nasty things.
And some very other strange things.
PvP there is pretty sweet.