The document discusses how social media is changing the way advertising agencies acquire new business. It outlines that agencies traditionally struggled to identify their target audiences and differentiate themselves, but social media allows agencies to more clearly target potential clients. The document also notes that search engine optimization, blogging, and participating in social media have become essential for agencies to market themselves and generate new leads online where most business-to-business research now begins. It provides tips for agencies to get started with an effective social media strategy.