Some more popular free Classified Ad Sites

Kijiji - http://www.kijiji.com
Gumtree - http://www.gumtree.com
Craigslist - http://www.craigslist.org
Backpage - http://www.backpage.com
Google Base - http://base.google.com
MySpace Classifieds – http://classifieds.myspace.com
Adoos – http://www.adoos.com / http://www.adoos.us /
http://www.adoos.co.uk
USFreeads – http://www.usfreeads.com
AdPost – http://www.adpost.com
AbleWise – http://www.ablewise.com
ClassifiedsForFree – http://www.classifiedsforfree.com
AdTrader (UK) – http://www.adtrader.co.uk
FreeAds (UK) - http://www.freeads.co.uk
AdLandPro – http://www.adlandpro.com
Oodle – http://www.oodle.com
ClassifiedAds - http://www.classifiedads.com
WorldsList – http://www.worldslist.com
OzFreeOnlineClassifieds - http://classifieds.ozfreeonline.com
WebPagePublicity Classifieds -
http://www.webpagepublicity.com/free-classified-ads.html
Yahoo Classifieds – http://classifieds.yahoo.com
ClassifiedAds4Free - http://classified-ads-4free.com