A few weeks ago, craigsconnects and Rad Campaign published an infographic on how the top 50 nonprofits stack up for their use of social media. Yesterday, Craig Newmark (craigslist.com founder) and his team published another infograph that parses this data by cause areas. They looked at how often these orgs were posting updates on different platforms, which nonprofits were being talked about the most, and whose messaging was having the most impact on their respective communities.