NEW YORK (AdAge.com) -- As founding partner of Velocity Interactive Group, former AOL chairman and CEO Jonathan Miller has become very involved in the "mashing" of online video ads. At yesterday's OMMA video conference, he cited the exploding traffic of Velocity's Mixercast.com. It allows users to legally mash -- or mix together -- parts of various marketers' video commercials and other media content. In other news in this 3 Minute Ad Age, video from a high-flying Red Bull public relations stunt. And, eBay closes down its failed Media Marketplace.