Thanks for the heads-up, Sam. That's pretty cool, and I'm a big fan of a lot of what Google has been doing lately, especially the free tools they provide.
Here's an idea I've gotten from the google maps "create your own map" function - On my next long trip, I'd like to bring a camera and GPS so I can plot the positions of the pictures I take along the route and other points of interest (things like camps, water, landmarks). I then plan use google maps to input my route and pictures at their correct positions, then add captions to narrate the trip. It seems like a really good way to anchor the story of hike to the countryside it went through.