Fox Interactive exec Mickie Rosen will join investment firm Velocity Interactive. Rosen, who served as FIM’s SVP and GM, Entertainment, had a wide-ranging brief at FIM: She ran properties like Rotten Tomatoes, oversaw content acquisitions and managed Fox on Demand on MySpace, the company’s foray into streaming video. As an investment partner at Velocity, she’ll focus on video, music, social media, publishing, games and online advertising. Rosen worked with Velocity partner and founder Ross Levinsohn when he was FIM’s President. Release.