An interesting project uses the evaluation version of MapPoint web service to show all bloggers in your neighborhood.
It's called NeighBlogMap. I had to tell the system where my blog was physically (or at least spiritually) located. According to this tool, Vermont is one big blank expanse of barren blogless wasteland. This is not true. I know of Margot at mangot.info, Julie Lerman at thedatafarm.com, Norma of Now Norma Knits 2, etc. I wonder if it will catch on?
Match this up with the service that can figure out where an IP address is found on the globe, and this could rate higher on the cool scale.
Must go to sleep before I turn into a pumpkin.