According to a survey conducted with KRC Research and released on the new Weber Shandwick Social Impact blog (impact.webershandwick.com), the majority of nonprofit organizations (88%) are experimenting with social media to engage key audiences, but a significant majority (79%) are uncertain of how to demonstrate social media’s value for their organizations. Only half (51%) report active use of social media. The research was conducted among 200 nonprofit and foundation executive directors and senior communications officials in July – August 2009. More at CNNMoney.