Just thought I would share this with you, as some may not know it is available. REMEMBER to always read everything associated with any site you wish to do business on and advertise. Good Luck!
Main Overview - http://www.craigslist.org
Help Overview - http://www.craigslist.org/about
Terms Of Use - http://www.craigslist.org/about/terms.of.use
Sign Up for account - https://accounts.craigslist.org/login/signup?rp=&rt=