Googling "geopdf"?

This morning I read about Mark Maunder turning 10.5 hours into a nifty web start up. If you'll take a gander at the "Who What Where When Why" section of the side bar, you'll find the goods. Drift your mouse over from whence folks came. In Firefox, I'm seeing the full link in all of its gory details. I see some folks are googling geopdf. One search was for geo .pdf. Did you find what you're looking for?