Images: Living in a virtual Laguna Beach

MTV Networks' "4D" approach attempts to combine content from the network's television shows with fully 3D virtual worlds, and then put it all through a feedback loop in which users can interact with TV personalities and create content that becomes part of the shared experience. MTV has already launched two branded virtual worlds, Virtual Laguna Beach (pictured) and Virtual Hills. These take the story lines of the hit shows Laguna Beach and The Hills, respectively, and weave them into a public 3D digital environment.