PUBLIC MARKS with tags "blog post" & blog.searchenginewatch.com

View the lecture here (RealVideo). It runs about 40 minutes.

Using Google Earth placemarks and web pages, we've created the world's biggest interactive game.In order to beat the GameMaster, you must follow the clues and utilize the Checkpoint feature to move ahead.Once you've beaten the first GameMaster, you'll advance to the BIG GAME of EARTH CONTEST where you'll compete with other self proclaimed super sleuths for BIG REWARDS!