DVD has the potential to make much more money than theatrical presentations, but alas DVD (including Blu-ray to some extent) is heading for extinction because of streaming and portable devices. We are heading for an era without a hard copy of anything...including the movie poster. They're already making those digital too!
Sorry for the rant, just had to comment on that. Back to DVD, that's why people are so unruly in movie theaters. They act like they're at home watching a video. Theaters used to be spaces, like libraries, where people knew to shut up for the sake of others. No longer. Rant number two...last Friday I unintentionally scared the socks of some girl who was texting during a movie's opening credits and wouldn't turn off her phone's bright screen after the first time I asked. That is, until I moved and sat right by her and threatened to have her thrown out for doing something that is identical to continually turning on a flashlight during the movie and noisily clicking away. The sense of entitlement for today's young people becomes even worse when related to technology.
Nonetheless, all this social media can be good for films. Who cares what Ebert says when you can send out a blitz of texts to friends or post a simple facebook update and ask them about a film you intend to see?
I also think this will help when the Muppets come to ComicCon. I know they attempt to limit phones etc, but let's be serious. We'll probably get a glimpse of Fozzie Bear cracking jokes from the Con panel on YouTube and Disney should support all the viral help they can muster. *Real* viral, not manufactured.