Mapping the run: Thanks GMaps!

I found this site in a running magizine this week and been quite happy that my routes were fairly accurate (and, maybe a bit longer than I thought). Using GoogleMaps, the site allows you to plot out a route and it'll kick out mileage and elevation and you can save maps to share with others.
Here's Saturday's run (which I had thought was only 17 miles, but ended up being a tad more).
Very cool.