Adtactics Safelist is one safelist that I do recommend for promoting biz opps online.  I do not recommend too many safelists for marketing online, however this is one that I do.  To start using Adtactics go to Adtactics

  Step by Step video how to post an Ad on craigslist.  If you are looking for a free way to post a classified ad online then posting to craigslist is the way to go.  Go to http://www.craigslist.org to post your free ads.