I've been using del.icio.us for the last three years as my primary search tool. Google/Yahool are great for the generic stuff but for the meaningful stuff I use del.icio.us. Why? Easy, most of the bookmarks to web pages are intelligently filtered, noted, and tagged.
Hey, would you put crappy music on your ipod?
There's a new online book from Charles Leadbeater about creative collaboratio
One of the most thoughtful bloggers, Dave Pollard, on knowledge managemt (km)