I spoke too soon. It seems MySpace has updated their Terms of Service to give them the same authorization SOLELY for use on MySpace.com . This obviously changes the whole ownership of Intellectual Property question for the social networking site. In the previous case, MySpace had re-written the TOS (as you consent to no matter when you sign) to include sweeping ownership of user submitted content.
This is a retraction (though MySpace is still a dangerous system).