There are hundreds of Web 2.0 sites out there, and while many are potentially interesting and useful, finding the right one can be a pain. TechCrunch has a post this morning about Go2Web20.net, a site devoted to tracking and tagging Web 2.0 sites. Its Flash interface (occasionally flaky) lets you search for a Web 2.0 site by keyword, or by using a tag cloud.
What’s the geographical connection? They have tags for “Mapping” and “GPS”. But it’s worth poking around just to see what’s out there and available - I especially recommend looking at the “Collaboration” tag for interesting ways to work cooperatively on projects over the Internet.
programmableweb.com is also a good place to find well-organized mapping sites.