19. The non-transitory computer storage medium of claim 15 , wherein synchronizing the modified set of bookmarks comprises synchronizing the modified set of bookmarks with a bookmark storage system configured to synchronize ratings or annotations associated with bookmarks.
20. The non-transitory computer storage medium of claim 19 , wherein each bookmark in the modified set of bookmarks comprises an identifier of a resource, a user-provided rating of the resource, and a user-provided annotation describing the resource.