I found this to work quite well. Makes it dead simple to geotag photos without the use of a GPS reciever. One minor tweak, some of my photos ended up with locations slightly off from where I intended.

If it's reved, I'd love to see a little UI in there like a "drop it here" window and the ability to manually edit location data.

But, come on, it's free and it works. I can't complain.