Today, Craigslist is one of the most well known of all online urban communities on the web. It allows people to place free classified adverts relating to various subjects, as well as having forums where people can discuss various topics.
Craigslist was founded by Craig Newmark from the San Francisco Bay Area in 1995. Then it became incorporated in 1999. Since its incorporation as of November 2006, there were over 450 cities where a Craigslist has been established.