1. A method of disseminating to a plurality of user devices an update set for a software product produced by an enterprise, the method comprising: (A) making the update set available on one or more first network devices; and (B) making update notifications available to a plurality of second network devices, at least one of the second network devices not affiliated with the enterprise, each update notification including an identifier of the update set and an identifier of at least one of the one or more first network devices from which the update set can be downloaded.