9. A method comprising: receiving at a server of a social networking system a request for information based on an instruction in a markup language document, wherein the request for information is responsive to a request for a web page of a third-party website that is within a domain of a third-party website that is different from a domain of the social networking system, and the request for information includes one or more parameters for selecting the requested information, the one or more parameters comprising at least one parameter selected from a group consisting of: a URL, a domain, a networking address for the requested information, one or more keywords, one or more interests, demographic information, location information, geo-location information, an instruction to apply affinity criteria, an instruction to apply a decay factor, and any combination thereof; identifying a user associated with the request; determining the requested information based on social information associated with the user, wherein the requested information comprises information associated with a set of recommended web pages for the user selected at least in part on one or more actions performed by one or more other users with whom the user has established a connection in the social networking system; and sending the set of recommended web pages for rendering as content displayed within the web page.
9. A method comprising: receiving at a server of a social networking system a request for information based on an instruction in a markup language document, wherein the request for information is responsive to a request for a web page of a third-party website that is within a domain of a third-party website that is different from a domain of the social networking system, and the request for information includes one or more parameters for selecting the requested information, the one or more parameters comprising at least one parameter selected from a group consisting of: a URL, a domain, a networking address for the requested information, one or more keywords, one or more interests, demographic information, location information, geo-location information, an instruction to apply affinity criteria, an instruction to apply a decay factor, and any combination thereof; identifying a user associated with the request; determining the requested information based on social information associated with the user, wherein the requested information comprises information associated with a set of recommended web pages for the user selected at least in part on one or more actions performed by one or more other users with whom the user has established a connection in the social networking system; and sending the set of recommended web pages for rendering as content displayed within the web page. 10. The method of claim 9 , wherein identifying the user associated with the request comprises accessing a cookie stored on a user device from which the request was received.