The economics of social media are continuing to heat up as more and more value and buzz are created in new and growing market categories. In just the past months, Federated Media raised an additional $50 million while AOL acquired Bebo for $850 million. Money continues to flow in and out of the category, which seems to continue to grow in depth and context. This 199-page report, filled with charts and data, examines the categories, number and size of investment into social media and the resulting value created from 2007 through 2008.