The survey found that commercial social networks, especially Facebook, are popular among nonprofits but community sizes remain small on average. Most nonprofits have been using these networks for less than two years. While staff time and budgets dedicated to social networks are real, they remain relatively small. Nonprofits prefer traditional marketing over social media to promote their networks. Fundraising revenue from social networks is limited, with most raising $500 or less annually on Facebook. House social networks are less common, with similar community sizes and tenure, but some generate more substantial fundraising revenue.