We've published our list of the top 100+ sites that any U.S. business can list on for free. We only include quality, working sites and regularly update the list to remove sites that no longer work or are no longer free, as well as adding new sites.

You can see the list of sites here: Top 100+ Free Sites To List Your Business - Local SEO Citations

If anyone has questions about specific sites and how to create listings on them, I'll try to come back and answer. Enjoy.