Yesterday, I linked to a post by Chris Winfield that offered up some advice on finding the best social bookmarking and social news sites for your small business. In the comments, a reader asked where they could find a list of social media sites. As it turns out, there's a great post over at Cornwall SEO that includes more than a dozen social media lists, ordered by how recently they were updated.

Some of the resources, like the one put together by Tropical SEO have been updated over time to add additional sites. The most recently published list, from Vandelay Design categorizes the sites by topic and invites readers to add their own suggestions in the comments.

Just keep in mind that each of these lists serves as a starting point for your journey. Just because a site is listed doesn't make it a good fit for your site. At the same time, there may be highly relevant sites that haven't made any of these lists yet.