Ads may be promoted to a more preferred ad spot type and/or demoted to a less preferred ad spot type in a manner that maximizes or increases their economic values and/or their utility to their audience. Such promoting and/or demoting may be done based on accepted ad monetary amount information and/or...http://www.google.de/patents/US20040267806?utm_source=gb-gplus-sharePatent US20040267806 - Promoting and/or demoting an advertisement from an advertising spot of one type to an advertising spot of another type
