Blacklist can be found under Social Lists and it's a vital thing whenever you head into a new city area, sadly. A disappointing side effect of the game being successful. I have about 30 of them on my blacklist at the moment.

As for chat window suggestions - I have one 'Chatter' window which includes all forms of chat and emotes at the top left of my screen, and have filtered out shout and yell from my 'general' chat tab which sits at the bottom left. Makes life easier.