The current contest polls are stickied at the top of this forum. Derek posted the link to the "Contest Rules and Procedures" page...that has the rules and the links you can click on to submit pictures for next month's contests.

As for prizes...occasionally we will offer a "real" prize, but unless otherwise noted, for almost all the contests, the only prize is pride of winning. Winning pictures get posted on the site's front page (submission links can also be found beneath each of those pictures) for a month and each winner gets a special winner title that goes under their username for the month.