The document discusses the costs and returns of using social networks like Facebook and MySpace for fundraising and advocacy. It finds that the ROI for time spent on social networks is typically very low, around -90%, and that growing an email list internally is only financially worthwhile if it costs under $2-3 per email address. It also provides examples of higher-earning fundraising campaigns using email versus social networks, finding that email campaigns tend to raise much more money and have better ROI.