Web2.0Slides
http://web2.0slides.com/

Web2.0Slides is a self-running slide show of over 1,400 of the best Web2.0 sites. It’s categorized by tags and sorted alphabetically. You can click on any site in the left-hand column to pause the slide show and surf around. When you’re done, simply click PLAY, and it will begin right where you left off. This has been added to World Wide Web Reference Subject Tracer™ Information Blog.