Abstract: Methods, systems, and apparatus include computer programs encoded on a computer-readable storage medium, including a method for updating campaigns. A content sponsor is identified that has one or more campaigns for presenting content to users. A prompt is provided to the content sponsor to provide one or both of conversion value information or estimates for one or more conversion actions, the estimates being for actions that are currently unable to be directly measured. The estimates are received. Rates for conversions are determined for each of the one or more conversion actions, including using the estimates and interaction data associated with the one or more campaigns to determine the rates. The determined rates are used to make a suggestion or automatically adjust one or more parameters associated with the one or more campaigns.

Abstract: Systems and methods include receiving an indication of a hardware or software configuration of a client device. Content associated with a downloadable application is identified by matching installation requirements for the application to the hardware or software configuration of the device.

Abstract: Systems and methods include receiving an indication of a hardware or software configuration of a client device. Content associated with a downloadable application is identified by matching installation requirements for the application to the hardware or software configuration of the device.

Abstract: A system and a computer-implemented method of serving online content items using a semantic description of a feature that is common to a plurality of online content locations are provided. The method includes assigning one or more identifications based on the semantic descriptions to each of the plurality of online content locations using one or more features associated with a respective one of the online content locations, receiving a selection of one or more of the assigned identifications and a physical location of the associated online content locations, determining at least one of a physical location of an online content recipient, and an intended location of the online content recipient, and transmitting an online content item to the online content recipient when the online content recipient is within a specified distance from any of the selected online content locations.