Roll your own search engine. This web applications let's you create a personal "search engine" by adding only selected websites and/or tags and/or searches created by people you trust. It thus builds a trust/authority system for searching.
Will be interesting to see this one launch. Another RoR web2.0 Ajax web application with spiffy UI, this one intends to solve the 'real-time online collaboration' issue.
This sounds really interesting. They (some Mozilla developers with venture capital) have taken the Firefox browser and extended it significantly with integrated webservices. I hope I'll get an invitation to test this baby. :)
By opening up the technology (Google maps) or by letting users control the content (flickr, ebay, amazon), customers are increasingly in control. However, the community they create in this way brings its own switching costs, which is just as high as tradi
New kind of forum software, with tagging instead of sections, live updating of threads with AJAX, and a new ranking system based on output and reputation.