Our friends at the Canary Project have recently launched a new initiative, called Green Patriot Posters. Taking inspiration from posters during WWII promoting conservation of materials for use in the war effort, they're asking Americans both famous (Michael Beirut, DJ Spooky) and regular (you and me) to submit posters encouraging conservation and environmentalism now.You can submit your own on the site (see some below) and other users can vote on their favorites. Big vote-getters and other favorites will be distributed through a variety of channels. Michael Beirut's first entries-calling for more posters and for the creation of green-collar jobs-were plastered all over buses in Cleveland.Check it out. Perhaps you have a cool poster idea that will end up being seen by millions.