My guess is the movie makers have found a way to make money off the torrent. Possible an ad filled movie but a better quality movie than most on torrents. If the movie compression makes it impossible to rip out or skip ads this could be a real win win for all.
This is actually quite genius. It's essentially advertisement for the real DVD.
They're not trying to win over pirates, as everyone here has assumed.
On the contrary, they're targeting "morally sound" internet users that are already against piracy, who would jump at the chance to download a full DRM-less movie legally. These people have a good chance of then going on to buy the DVD that comes with all the extra features.
The pirates are going to be pirates....Paramount aren't stupid. This is just genius advertising to people who wouldn't pirate in the first place.
It could be a trap, but more than likely Paramount is seeing a new avenue for advertising and sales and that would be more important to them. They only danger I see is if the movie moguls start doing this they can use any money coming in from this avenue to turn around and use against those they deem to be pirating, thereby trying to slowly dominate the torrents.
Hollywood has been unable to stopper the leak of torrented movies on the internet. Maybe if they just open the floodgates the dam will break and the ISP's won't be able to handle the capacity. This could be directly related to the usage caps being put in place all over the world, so that a 5gb download costs you the same $10 that a movie would. Conspiracy theorists go! lol
I think it is a marketing experiment. They are probably trying to construct arguments for or against whether bittorrent sharing boosts or hurts sales. Maybe they will count the number of bittorrent downloads and compare that figure to the number of ensuing DVD sales.
So the "catch" would then be that if this will be downloaded profusely and generate almost no DVD sales whereas it is allegedly illegally seeded on torrent sites, they will bee able to say "See, we've tried and now we have evidence that bittorrent sharing is damaging to our sales!" or something along that line.