The DRM on it is insane: you can only install it three times and then you're out of luck. Ever have to repave your Windows install? Ever feel like playing a game you bought a few years (and computers) back? Too bad.
I understand that piracy can be a big problem, particularly for game developers, but treating your honest customers like criminals is not a strategy for success.
See the reviews on Amazon.com for a good example of the protest vote.