I don't use the word "brilliant", as in a description of something exceptionally clever or talented, very often. It's a good description though for the blog/website PostSecret.
The premise behind PostSecret is pretty simple: People send in postcards containing things they are otherwise afraid to say in the real world. I imagine that actually sending a secret to the PostSecret people is, in some way, therapeutic for the folks that participate. For those that read the secrets, it's a mixture of fascination and cringe. I've been reading the secrets for a while now, and what I've read has done everything from causing me sorrow to literally wanting to give my computer screen a high-five.
It is, as I previously noted, brilliant. Do yourself a favor and check out PostSecret. In addition to the link, above, you can find it on the listing of favorite blogs on this site.