Adweek reports that MTV Networks is planning to create a series of unique web destinations centered on its most popular shows and programming themes, and ClickZ says Fox Cable is restructuring to better accommodate online ad buying and media integration.

Starting next year, Adweek reports, MTVN will introduce 20-plus online content hubs to serve its shows' most-involved fans. In addition to the web venues built around individual series, new community sites reportedly are in the works for fans of popular MTVN genres and topics, such as hip-hop music, celebrity gossip, amateur talent contests and VH1's various list-based programs.

MTV Networks has been expanding its online presence with the acquisition of Atom Entertainment in August, and IFILM late last year.

Meanwhile, Fox Cable Networks (FCN) has assigned its Fox Cable Sports ad sales exec, Adam Holzer, to head up its integration and emerging media division. The goal, reports ClickZ, is to increase buying efficiency for ad clients, and to better prepare the network for cross-media offerings at next year's upfront.

Holzer will act as a central hub, working with various FCN sales and content execs representing all the firm's platforms in order to speed up the cross-media buying and campaign development process.

"Streamlining pre-roll video ad integration with TV buys, and 'working very closely' with sister companies like MySpace to create cross-platform ad packages will be on the agenda for the new department," Holzer has been quoted as saying.

News Corp. bought Intermix Media Inc., owner of MySpace.com social networking site, last year for $580 million.