They still ban accounts yes.
But I don't agree with vaughnmr.. yes some people take advantage but to be punished for getting actual dud items is not the consumers fault. Nor should Amazon "punish" them.
My account was banned, now its it not banned. I hardly think returning 3 items in a 6 month period deserving of a ban, but according to your comment, I did. How very tolerant of you.