Below are the best free classifieds list, which gives more leads to your business
http://www.craigslist.org/ PR-7
http://www.backpage.com/ PR-6
http://www.locanto.com/ PR-5
http://www.adlandpro.com/ PR-5
http://www.usfreeads.com/ PR-4
http://www.oodle.com/ PR-5
http://www.adpost.com/ PR-4
http://www.inetgiant.com/ PR-5
http://www.webclassifieds.us/ PR-4
http://www.recycler.com/ PR-5
http://www.kugli.com/ PR-5
http://www.webcosmo.com/ PR-4
http://www.theflyer.com/ PR-4
http://www.salespider.com/ PR-4
http://www.classifiedads.com/ PR-4
http://www.olx.com/ PR-6