Boycotts online are about as useful and go over as well as a lead balloon. No one actually follows up on them, as with the L4D2 one. I just laugh in their faces cause they are so "rebellious" that they pirate the game. Oh wow, like they probably wouldn't have done that anyway, no matter what had happened. Doesn't help matters that gamers today expect companies to cater to them with a certain about of content and if DLC is announced any time within the first 2 months of the games release they panic and yell foul.
That being said though, I just get a kick out of this "They didn't get my money rawr rawr" going on in threads like these. You keep fighting that good fight. It shows that bad company who's boss. ROFL.