Craigslist
The site serves over nine billion page views per month, putting it in 56th place overall among web sites worldwide, ninth place overall among web sites in the United States (per Alexa.com on January 10, 2008), to over thirty million unique visitors. With over thirty million new classified advertisements each month, Craigslist is the leading classifieds service in any medium. The site receives over two million new job listings each month. So it is one of the top job boards in the world.