48; a method according to claim 47, the plurality of these approval mechanism is selected by the group consisting of: a game provider, a game-console provider, an advertiser, a game publisher, an ad agency, an advertisement broker, an advertising service provider, a third des ignated by the game provider and a third one designated by console provider.
48. A method according to claim 47, wherein the plurality of approving authorities is selected from the group consisting of: a game provider, a game-console provider, an advertiser, a game publisher, an ad agency, an advertisement broker, an advertisement service provider, a third party designated by the game provider, and a third party designated by the console provider.