Don't look now, but a robot is chalking Tweets on the Tour de France.

Check out this CNN story about the "Chalkbot"

"Not only is Lance Armstrong posting to Twitter from the race, but a Chalkbot -- a robot that writes in water-soluble paint -- is scribing messages onto the road, offering inspiration to the competitors and to cancer survivors."

Check out this cool YouTube video from the creators of the Chalkbot. You can submit messages via Twitter or read its messages here.

These guys certainly deserve credit for creativity and skill, but the very idea of moving something which normally appears online only to the real-world is truly the next frontier..

Check it out.