Blueglass writes a lot about infographics and content promotion. Here's a post they have about finding the perfect network for your content promotion, which might help you. http://www.blueglass.com/blog/how-to-find-the-perfect-network-for-your-content-promotion-campaign/
A year ago, SEOmoz had a great post on building links with infographics at http://www.seomoz.org/blog/how-to-build-links-with-infographics