News Corp's MySpace has announced a partnership with Oberon Media to bring casual games to their social network
. MySpace Games will allow users to include diversions right on their web spaces. "MySpace is looking to tap into the fast-growing market for "casual gaming" -- five-minute distractions that appeal to audiences of all ages by letting them test their wits against other online players. MySpace Games is expected to launch in 2008, the companies said."
Though almost certainly not as in-depth, this sounds like it has overtones of Metaplace