I've seen a good increase in racism( a huge peeve of mine) stupidity, trolling and more racism and stupidy in the general chat.
The only thing ill disagree with is that F2P is the prime culprit. F2P players have a limited number of general chat posts, wheras I can think of at least 10 examples where I saw the same person spamming general chat(which would indicate a subscription player)
The conversations have gotten out of control. From politics to religion, to racist content, general chat is best turned off than watched. The problem with that is that it shrinks the number of people you interact with. Some general enforcement of civility rules will go along way to growing the community instead of everyone running to their own corner when they log into the game.