How PR pros are using social media — and how they’re measuring their results

In this post, Mashable ’s Christina Warren examines how PR professionals are using social media to “achieve real results when dealing with business-to-business relationships, when representing companies that already have a well-known brand, and in politics,” according to Warren. “We’ll also look into some of the tools of the trade that PR pros are using to measure the success of their endeavors,” she added.