While this may be helpful, I can't see it being a game-changer at all. Have retailers like NewEgg or Overstock seen any sort of drastic revenue increases or activity from accepting Bitcoin?

The problems with Bitcoin are almost entirely on the acquiring -side and not spending side. Getting a Bitcoin is a PITA and I don't think the demand from most consumers is there to overcome the pain.

The game-changer for Bitcoin will be when someone answers the question: "Why should I switch from paying with my credit card to Bitcoin?" with something compelling.