When should I use FeedSync as opposed to some other synchronization technology?
FeedSync is ideal for synchronizing data that can be published in an RSS or Atom feed. That includes collections of items such as calendar appointments, contacts, favorites, and news items. In addition, FeedSync is ideal for bidirectional, asynchronous synchronization, particularly for scenarios where multiple people can independently edit or create entries–where there is not a single “master” copy of the data and each end user has their own copy of the data. FeedSync was designed with simplicity in mind, and developers will find that implementing FeedSync synchronization is easy, especially for an application that already supports RSS or Atom.