PostSecret is "an ongoing community art project where people mail in their secrets anonymously on one side of a homemade postcard." (I couldn't think of an original way to describe it in my own words.) The guy who runs the website posts a new batch of secrets each Sunday. I have been checking it faithfully for a couple of years now.
Many of the secrets are funny, silly, or just venting about everyday frustrations. Some of them stab you in the guts. This week, I'm haunted by this one.