OK. Here's the deal, Columbia Pictures:
A trailer is meant to build excitement for an upcoming movie. In order to do that most effectively, the trailer has to be accessible.
So take a movie like Zombieland, which is due to come out this October. Two versions of the trailer became available online today. Unfortunately, one version requires constant plug-ins that few people want to bother with and the other is in a flash format that is choppy for all but the speediest Internet connections.
So please, in future, take a page from Fox Searchlight and Walt Disney Studios: Get yourself a YouTube account and post trailers there. You'll be doing all of us a favor.