I think I first heard about it via Google, but at the time BRS was invitation only and because I was a n00b, I didn't try to sign up. Then I wrote a blog post about barefoot running and MikeR stumbled upon it and invited me to join (and I'm so glad I did!).
I don't get it. I Googled "barefoot running" actually using Google, and the BRS shows up once on the first page at the very bottom. On the second page, there are a bunch of silly, non-sense returns for some Maple Grove Barefoot Guy, nearly a whole page of them. I just don't get it.