PostSecret is best described by its own summary:
PostSecret is an ongoing community art project where people mail in their secrets anonymously on one side of a postcard.That's it. Every week Frank Warren continues his tradition of putting online a collection of the best secrets he's collected. I have no idea how many he has to sift through to find the handful that grace the web every Sunday morning. It must be a daunting task.
It must also be daunting to be the mail carrier for Frank's address. A quite out of the way postal route slowly turned into an ongoing tsunami of postcards. What must it have been like when a few postcards turned into a phenomenon? Well wonder no more. The original PostSecret mail carrier retired and moved to the UK with her husband. She also started a blog and then got around to posting her side of the PostSecret story.