A while ago, I believe someone posted a link to a news article about a website that started out as a small site for a local selling bulletin board, but since has grown to be quite big, covering a lot of major cities. I can't for the life of me remember what it was called, anyone know?

You're not referring to Craig's List are you?

if you are, craigslist.org

craigs list looks like something that i would find when accidentaly typing a web adress wrong