Who's Using Social Media?

What do you think the percentage is of companies that have added social media to their marketing mix? This post on eMarketer details the results of the 2009 Marketing Industry Trends Report conducted by Equation Research which found that the majority of businesses are already using social media. About 59% of all US brand marketers surveyed claim that social media is already part of their marketing activity? Do these numbers shock you? Here's the chart below.