"So the message for the advertising industry is that more serious attention needs to be paid to social-networking sites like Facebook, and advertisers need to figure out how to leverage this traffic."
"Consumers only spend about 5 percent of their time online searching and the other 95 percent of the time at the destination. Social media is quickly accounting for a large percentage of that 95 percent."
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2010/02/14/BUU51C0AMN.DTL
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2010/02/14/BUU51C0AMN.DTL
via @armano