More than 12 million small-business owners are members of LinkedIn, which is roughly 20 percent of the social network’s entire membership. Guy Kawasaki, blogger and entrepreneur extraordinaire, spoke with the folks at LinkedIn to learn how these companies can harness the power of this site. Related PR Daily Kawasaki is giving a keynote at the Ragan Communications Social Media Summit in June. (Ragan is the publisher of PR Daily .) Learn more about the event.