PostSecret began three years ago as a creative idea for an art show exhibit, which just happened to change Frank Warren’s life. With a background in small business, Warren is a self-described, “accidental artist.†PostSecret is not a business. He forgoes profit on what is the largest advertisement-free site on the web.
Frank Warren tells the story of how PostSecret came about and became an internet phenomenon in a very short time. Link -via Cynical-C
I'm pretty sure that there are larger sites on the web without advertising (eg. almost any government site, any large university's web site, etc.).
While I don't konw if PostSecret is actually the largest ad free blog, the claim is much more reasonable.
he's just one of many fascinating people we have interviewed...why don't you drop in to http://www.orato.com and peruse our archives and categories.
Better yet - post your own story.
Sincerely,
Heather Wallace
Orato.com