Clipmarks is announcing their latest feature, ClipSearch, which will build up a user-generated database for better search results. We first mentioned Clipmarks here.
With the ClipSearch function, users can create their own personal web to search for relevant items, or search from the Clipmarks community. Their point of differentiation is the use of content within a clip to locate matching keywords, relying less on the tags a user has assigned. This makes the reach of a user-generated search much broader, and enhances your search results.
With social bookmarking spreading the way it is, improving the ability to search within your own social bookmarks as well as others will become more and more important. ClipSearch is promoted as a way to create your own personal web, which can be easily perused and accessed for quick information. While StumbleUpon will help you find new sites and Reko is aiming to make bookmarking more social, Clipmarks is simply looking to make a better search.