1. An advertising system associated with one or more given users comprising at least one computing device adapted to: access one or more shared advertising environments; determine an advertisement presentation opportunity; render a selected shared advertising environment; execute at least one virtual world advertisement in the selected shared advertising environments; and synchronize execution of the at least one virtual world advertisement with at least one other user, wherein the at least one other user also has access to the selected shared advertising environment and the at least one virtual world advertisement.