Abstract: A system and method for synchronizing content among a plurality of user agents is described. In one embodiment an aggregator receives, from a particular user agent, a request for a listing of content feeds, and the request includes information that identifies the particular user agent from among the plurality of user agents. In response, the aggregator generates, as a function of the particular user agent that sent the request, a status identifier for each of the content feeds, wherein each of the status identifiers indicates whether a corresponding one of the content feeds has content available that the particular user agent has not received. The aggregator then sends a listing of the plurality of content feeds and the status identifiers to the particular user agent.