1. A system for targeting advertising content of a first or second sponsor to a plurality of mobile communication facilities, the system comprising one or more computers having computer readable mediums having stored thereon instructions which, when executed by one or more processors of the one or more computers, causes the system to perform the steps of: (a) receiving from a website publisher or an application provider respective requests for advertising content corresponding to the plurality of mobile communication facilities operated by a group of users, wherein the plurality of mobile communication facilities includes a first type of mobile communication facility and a second type of mobile communication facility, wherein a rendering capability of the first type of mobile communication facility is different from a rendering capability of the second type of mobile communication facility; (b) receiving a user transaction datum corresponding to the group of users; (c) selecting respective advertising content from the first sponsor and the second sponsor based at least on a relevancy of each advertising content to the user transaction datum, wherein each advertising content includes a first item and a second item, wherein the first item requires the rendering capability of the first type of mobile communication facility to be rendered thereon and wherein the second item requires the rendering capability of the second type of mobile communication facility to be rendered thereon, wherein the first item is incompatible with the second type of mobile communication facility and the second item is incompatible with the first type of mobile communication facility; (d) receiving a bid from the first sponsor offered for delivery of the advertising content of the first sponsor to users associated with the user transaction datum; (e) receiving a bid from the second sponsor offered for delivery of the advertising content of the second sponsor to users associated with the user transaction datum; (f) attributing a priority to the delivery of the advertising content of the first sponsor over the delivery of the advertising content of the second sponsor to users associated with the user transaction datum based upon a determination that a yield derived from the financial consideration of the first sponsor is greater than a yield derived from the financial consideration of the second sponsor; and (g) transmitting the first item of the advertising content of the first sponsor instead of the first item of the advertising content of the second sponsor to the first type of mobile communication facility for display thereon and transmitting the second item of the advertising content of the first sponsor instead of the second item of the advertising content of the second sponsor to the second type of mobile communication facility for display thereon.