My teammate Dane brought up this idea over lunch, and we hacked this out last night. We thought it would be really interesting if designers could submit their best ‘signup’ button and compete to see which one is most clickable. There are a lot of interesting places to go from here: design categories, vote tallying methods, and analysis of user demographics and their design preferences. We're both longtime readers of HN, and we'd love to get feedback from the community.