Social media marketing is expected to dominate this year -- so much so that 81% of CMOs plan to link their annual revenues to their social media investment, according to a recent survey by The CMO Club and Bazaarvoice. But the growing list of online social media sites makes choosing the right route complicated. From Facebook to YouTube to Digg and beyond, which media outlets will net the most bang for the buck in terms of customer communication, brand exposure, traffic, and SEO?
