YouTube announced today that it has increased the time limit of uploaded videos from 10 to 15 minutes.
"Well, we’ve spent significant resources on creating and improving our state-of-the-art Content ID system and many other powerful tools for copyright owners. Now, all of the major U.S. movie studios, music labels and over 1,000 other global partners use Content ID to manage their content on YouTube. Because of the success of these ongoing technological efforts, we are able to increase the upload limit today"
Bumping up that limit also increases bandwidth and storage costs; theoretically the longer clips will also give the site more chances to sell more ads.
Ah hah! The truth shall set you free!