I won Honorable Mention in this contest (and a nice check) in 2011 for Vacuum energy, and I was a finalist in 2012. I can answer questions about the process and I’ll also vouch for these guys – this is a real contest, paid for by the supporters of the Science and Math festival in downtown Los Alamos. It;s growing rapidly too, so get your application and art in there early and get the exposure. It is entirely free to artists. Don’t fret the facebook integration. While your fans can vote, they’ve structured it to avoid turning into a popularity or vote begging contest.