All you people saying "Fileplanet is just trying to make a buck or provide a worthy service." are missing the fact that this is exactly what Blue and the other sites are trying to do as well.
The signed sites have decided to operate as primarily non-profit websites. As a result this closes off the opportunity to purchase exculsives of their own. Were any of the above to go to a more commercial model they would likely seek out exclusives as well as exclusives=more subsribers.
I can't seem to figure out the motivation of the signed websites besides wanting to cut down on board traffic: exclusive demo=tons of bitching gamers eating into the bandwidth they can barely afford. Gamers whine about anything they can find. A one week exclusive demo isn't worth whining about in the grand scheme of things but all the folks on gaming message boards have to whine about it because their life seems to revolve around the trivial.
All the websites have done is cater to the bitchy gamer. Hell this will just give them more motivation to bitch. This won't hurt activision because despite the fervor everyone is so full of shit they will download the demo the moment it is available. This also won't hurt Fileplanet because they now have a whole bunch of new subscribers.
I see this accomplishing nothing more than sparking a flame war.