3. The method of claim 1 , wherein the content includes an interactive advertisement.
1. A method comprising: detecting, by a computing device, the presence of a first user of an online social network; delivering, by a computing device, content to the first user, the content allowing enhancement by the first user; receiving, by the computing device, one or more enhancements to the content by the first user; detecting, by the computing device, the presence of a second user on the social network, the second user different than the first user, the detecting the presence of the second user comprising detecting that a first client node to which the content may be displayed is geographically proximate to a second client node associated with the second user; determining, by the computing device, a social context of the second user, the social context comprising data associated with the second user with respect to the social network, the data associated with the second user with respect to the social network comprising data related to an interaction with the particular content by friends or contacts of the second user; modifying, by the computing device, the content, the modifying based on the determined social context of the second user and the one or more enhancements to the content by the first user; notifying, by the computing device, the second user that the content has been modified by the first user, the notifying comprising displaying at least a portion of the modified content; and delivering, by the computing device, the modified content to the second user, the delivering comprising displaying the modified content to the first client node in response to the determination that the first client node is geographically proximate to the second client node.