Diigo (Digest of Internet Information, Groups and Other stuff) is a new "social annotation" bookmarking site with the standard save-and-share, tags, etc., and also sharable Web page annotations.
Rebirth of the Semantic Web. On the heels of the Technorati taggregator, the Oddiophile bookmarklet, the tag search (new today!) and much ensuing buzz, Jeff Jarvis brings up people tagging. This concept drove Friendster and FOAF, both of which petered out. But with Technorati's elegant synthesis of photo, link, and post tagging, the web may once again tap into networked individualism.
Gas prices are out of control and will continue to rise[NY Times]. However, I was looking at Matt H's Social Software ideas and decided check out one that already exists - gas prices. GasPriceWatch.com is a site that hosts gasoline prices from around the country. But the problem is, despite it's request for "non-commercial" use of the data, it relies on users to enter that information.
I'm about to have my first child so I've been looking at ways to save money -I figured finding the cheapest place to get gas would be a great way to start but quickly found that my price entries were the only ones within a 10 mile radius of my house. Spread the word.
Craig's List -- the gigantic Bay Area jobs/apartments/ridesharing/etcetra mailing list and website -- is planning on expanding (the Boston site is up), but is there anything else as useful and non-commercialized for other areas?