A method for multicasting targeted advertising data to end user devices is disclosed. In an illustrative embodiment the method includes but is not limited to correlating at a regional internet protocol television (IPTV) server, multicast queue data with web data from web sites visited by each of a plurality of end user devices associated with the regional IPTV server; selecting a subgroup of end user devices from the plurality of end user devices to receive targeted advertising data correlating with a member of the multicast queue data; and multicasting targeted advertising data associated with the member of the multicast queue data to the subgroup of end user devices from the regional IPTV server. A system is also disclosed for multicasting targeted advertising data to end user devices. A data structure is disclosed for storing data used by the system and method.