For a glimpse of the amazing things you can do with public information and Google maps, check out chicagocrime.org. I read about it on worldchanging.com (Simming the City) this week. A couple of programmers took a city crime database and linked it to Google maps so that users can create maps of crimes. For example, you can create a map of all the crimes reported on March 2, 2005 at 2 p.m. (Let's just say that was not the best time to be wandering around Chicago)
This use of mapping technology ties into one of the early conversations on this blog about using maps and Internet applications to get information from commuters about where road work is needed. It is a great way to get information out of databases and into the minds of the public.
Now, if we can just figure out a good way to link Google maps to E-Grid?