According to data from Compete, Facebook has surpassed Google as the top source of traffic for major portals like Yahoo, MSN, and AOL. In December, 15% of traffic to these sites came from Facebook and MySpace. 13% from just Facebook. They say it's among the top traffic drivers for other types of sites as well. Is Facebook as important to your strategy as Google?

"Marketers must focus on social marketing in addition to traditional search, as customers have a multi-pronged way of finding information," said Jeremiah Owyang, a Web strategist for the Altimeter Group, a San Mateo consulting firm with clients like Gigya. "The clear-cut channels of yesteryear are now an intricate set of connections."