In this episode of our newest show, the Vator Box, Citigroup Internet analyst Mark Mahaney joins our usual crew to help us rate pitches from ScanScout, Pixsy and Adify.First up is ScanScout, an online ad networks that lets advertisers insert scrolling banner ads across the bottom of Web video content.Vator Box regulars Bambi Francisco, John Shinal and Ezra Roizen agreed that the company’s technology provides a better viewing experience than the annoying pre-roll ads that dominate online video. Still, Roizen, a Vator.tv contributing editor, wondered whether that cool feature is enough to support a stand-alone company in the crowded online ad marketplace."How many of them are going to be able to get enough critical mass with publishers and advertisers," Roizen ... [ read more]