I was taking a gander at Agent Obscura, an agent's blog, and came across her post about PostSecret. Whatever the guy's motivation for doing the site (could be purely commercial, as one comment accuses him or could be something more altruistic and artistic), it's a powerful thing. People are so much more honest when they are anonymous.
I'm not sure what my secret would be. Sometimes I feel like I have hundreds. Other times, none.
I could say more, but I'd just turn maudlin, and we don't want that.