Starbucks, like most companies these days, is obsessed with buzz. Not the kind you get from a double-espresso but the kind you find online with tweets, hashtags and likes. It used to be that the major media outlets controlled the conversation. Today, consumers via social media have the power to start, join or change the conversation. The media covers the buzz instead of creating it. As a result, companies are trying harder than ever to encourage consumers to start conversations online with hashtag campaigns.