Mapping and tracking web 2.0 tool usage

I heard of WikipediaVision (beta) from a snippet in the Feb 2008 edition of College & Research Libraries News, and while that tool has potential, it led me to even more 2.0 tool/Google maps mashup applications that I found to be more impressive (mainly just because they're further into their development).

Check them out to see in (almost) real-time the usage and content people are contributing:

• FlickrVision 3D
  
• TwitterVision - also in 3D version and can be set up to pull from Facebook "twitter" messages.
  
• SpinVisionTV - pulls from YouTube postings

Caveats: Only certain user's activities will be reflected in these tools, depending on user information made public and other functions of the selected tools.