It's silly that Liongate is trying to keep the second trailer exclusive. Might as well release it everywhere, so everyone can see it to build up hype. Trailers are suppose to be EASY for viewers to find, not a hassle!
Pacific Rim also showed great footage at Comic Con, but never released it until a few days before it the movie released. Movie nearly flopped.
Yeah, I don't quite get it either. Isn't a GOOD thing for people to spread the trailer around to get it to as many eyes as possible? And it's hardly in the "spirit" of copyright protections (meant to ensure that the rights-holders get compensation for the distribution of their product) this piece of work is MEANT to spread around and for as many people as possible to see it.