- backpage.com - The best craigslist alternative. It allows use of hyperlink, external image. It gets good traffic.
- kijiji.com - An eBay backed free classifieds for world wide. It's now one of the most popular free classifieds of USA. In Canada kijiji.ca is more popular than craigslist.ca. It's drawback is that it allows only plain text ads. kijiji even doesn't convert URL into hyperlink
- Other sites that may be tried are usfreeads.com, webcosmo.com, stumblehere.com, epage.com, expo.live.com, base.google.com, olx.com etc..
Try these usa online free classifieds if you aren't able to post on craigslist anymore.