*I have my doubts about a drawing you can do in ten seconds that will last ten million years. I like graffiti as much as the next guy, but this is like tagging the Sphinx.
http://www.moondrawings.org/draw
"Welcome to Moon Drawings: a project to extend artistic expression to the Moon. We invite you to contribute a drawing—which will be etched on a sapphire disc, sent to the Moon, and potentially traced by a robot rover into the Moon's soil. The disc, contained in a sculpture called the Moon Arts Ark, will be shuttled to the Moon in 2016. It will remain there for millenia: a poetic gesture reaching out, far beyond any objective existence on Earth. >> Find out more here."