I have place I check everyday but thought it might be good idea to see where everyone else looks.
For me I check:
Facebook, Twitter (Lance, Matt,Trionworlds, Defiancegame, Defianceworld), Tumbler, Defiance.com, Amazon, Syfy, Bestbuy, Gamestop, Wallmart, Target, Gamespot, MMORPG, IGN, Ow.ly, Van Bach Industries, Youtube, Twitch, Defiance Central, Gamefaqs, Dodge, Axe, NBC, Namco, Xbox Live, PSN...
Believe that is all of them. If anyone have others please share.