Elmofongo: It has 20 million views on its official trailer alone. That is alot of people to consider.
And the like ratio is quite high.
https://www.youtube.com/watch?v=2Rxoz13Bthc Yeah that is a lot, but like snowkatt says, that doesn't mean actual customers, and even if it does they're probably still some way off from getting a decent return on the production budget (I'm not really sure how a film ticket's price is divided between the parties involved), not to mention a return big enough to warrant sequels.
My worry is that the film's non-gamer audience will mostly be kids, and even among gamers there may very well be little interest because it's cool to rip on mmos and even under mmo players it's cool to rip on wow. At least that has always been my impression.
Like I said though, I hope that I'm wrong.