Geospatial Blogging (Geogging?)

I was reading about geospatial information systems (GIS, the stuff that makes your car navigation system work) at work the other day and I stumbled upon a cool little map about the show Seinfeld.
It shows a map (or satellite photo) of New York with tags on different locations around the city. Click on the tag (e.g. Jerry's apartment, the Soup Nazi, etc) and see what happened there.
http://www.stolasgeospatial.com/seinfeld.htm

I agree, the above map is probably only for hardcore Seinfeld fans, but it really makes me wonder about the possibilities that are opening up with mapping technology. There's already Google Sightseeing (GSS) which allows you to see a bird's eye view of Mount Everest and zoom out to see where it is actually located in the Himalaya mountain range.

Just imagine the Zagat guide of 2010: a portable device that shows you a map of any city with tags showing where to get the best sushi, take out curry or where to avoid any soup nazis.