Abstract: A computer-implemented method includes receiving a computer-implemented model to process parameters of a content delivery campaign and a bid price for delivery of content in content delivery slots. The price to be paid is based on a losing bid. Processing the parameters and bid price determines an estimated price to be paid for the delivery of content and a metric describing an estimated result of the content delivery campaign. The method also includes receiving parameters of the content delivery campaign and the price to be bid for delivery of content. The method also includes processing the model and the price to be bid to determine the estimated price to be paid and the metric describing the estimated result of the content delivery campaign. The method also includes providing information about the estimated price and the estimated result to a content provider to facilitate selection of a final bid price.

Abstract: A computer-implemented method includes receiving a computer-implemented model adapted to process past online behavior of a user identifier of a networked computing device and determine an online activity type associated with the user identifier based on the past online behavior of the user identifier. The method also includes receiving data representing past online behavior of the user identifier of the networked computing device. The method also includes processing the model and the data representing past online behavior of the user identifier of the network computing device to determine an online activity type associated with the user identifier. The method also includes and providing information about the online activity type to a content selection server to facilitate selection of content to be presented to the user identifier.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer-readable storage medium, and including a method are provided where the method includes receiving information from a web publisher related to a presentation of a web property responsive to a user request, the information including an identifier associated with the content presented and an identifier associated with the user that viewed the web property; validating the information, including comparing the information to a separate information source that is provided by the web publisher including determining when the information is properly encoded and/or formatted; and when the information is unable to be validated, storing a record indicative of any invalid information.