| Abstract |
Different advertisers that may have different value propositions and that may desire different types of ad spots may effectively participate in an advertising network. An advertiser may express various value propositions using various types of offers, such as offers (or maximum offers) per impression, selection, and/or conversion (or some other user event). Probabilities of events, associated with offers, occurring may be used to allow different advertisers with different value propositions to compete against one another in an arbitration such as an auction. Advertisers may target the serving of their ads to keywords (search and/or content), particular publications or properties, particular vertical categories, other types of ad spots, etc. |