Left 4 Dead 2 has reached its end, following Valve's pledge to add more content to the original game (which is already being made good on). As of October 21st, the collective will be disbanded after succeeding in its quest "to get Valve's attention and have them support original L4D."
Fresh from his free studio tour (courtesy of Valve), group co-founder "Agent of Chaos" wrote, "Our goal wasn't to steer people away from L4D2, it was to get Valve's attention and have them support original L4D." So, by utilizing a boycott that wasn't intended to keep people from buying a game, you managed to force Valve to do something they certainly would have done anyway.
Dear Internet: You are getting predictable.