A new breed of Web 2.0 services and applications launched at the conference--an annual meeting promoting cutting-edge technologies--aims to bring that kind of personal knowledge to new search tools in the hope that such knowledge will help you find the exact information you're most interested in.

Some of the tools, like Ensembli and Primal Fusion, are Web services. Others, like Kutano and Evri, plug into your browser. Still others, like Sobees, are desktop applications.

Xmarks: The Wisdom of Bookmarks

One of the best ways to build a successful Web business is to give people a service they already need, then build on that base. That's the approach of , which is created by the same people who make the .

Foxmarks is actively being used on 3 million computers around the world, giving the service information on 600 million bookmarked pages. How useful is that information? My quick take is that it could be very useful.