
Kantrowitz joined MySpace, which is owned by News Corporation, in 2004.
Meanwhile, News Corporation chairman and CEO Rupert Murdoch has appointed former AOL CEO Jonathan Miller, to the new role of chairman and chief executive officer of its Digital Media Group and chief digital officer for News Corporation.
Based in New York and reporting directly to Murdoch, Miller will be charged with driving digital strategy across News Corp. businesses.
Miller will direct News Corp.'s stand-alone digital businesses, including MySpace, IGN Entertainment, Photobucket, as well as Jamba and the Hulu joint venture with NBC Universal.
Peter Levinsohn has been named to the new position of president new media and digital distribution at Fox Filmed Entertainment, the unit that controls the company's film and television content worldwide.
Levinsohn, formerly heading up MySpace parent company Fox Interactive Media, will oversee Fox Filmed Entertainment's entire content portfolio across all digital distribution channels, including Hulu and third party platforms in the broadband, mobile and gaming markets.