Patent ID: 7260783

Claim:
In a system in which a plurality of electronic pages can be viewed by a user, at least one of the electronic pages comprising at least one space for displaying content associated with a selected content campaign, a method for selecting a content campaign, comprising the steps of: (a) assigning a plurality of content campaigns to one or more of the spaces; (b) assigning an initial share value to each of the plurality of content campaigns; (c) upon a viewer downloading one of the electronic pages, identifying at least a subset of content campaigns from the plurality of content campaigns to display to the viewer based on, at least, targeting criteria; (d) determining a chance value for each of the content campaigns in the subset, wherein the chance value is based at least in part on a number of times each of the content campaigns fulfilled the targeting criteria for each one of the spaces; (e) if necessary based on the chance value, adjusting the initial share value; (f) assigning to each of the content campaigns in the subset a number of numerals, the number based on the adjusted share value; (g) generating a random numeral; and (h) selecting from the subset of content campaigns one content campaign that is assigned a numeral corresponding to the generated random numeral.