Yahoo is continuing their shopping spree, this time acquiring a video advertising network. Marissa Mayer and company have announced they’ve purchased BrightRoll for $640 million in cash. It’s an investment in video, one of Yahoo’s four “strategic pillars” as well as a “growth business” for the search-centric company. In announcing the acquisition, Yahoo is also attempting to re-brand what video is, calling is “display 2.0”, and something that can replace banner ads. BrightRoll makes Yahoo the largest video ad platform provider in the US.