"Officials from giant corporations meet all the time to share their latest and greatest PR strategies," read the conference website. "Now it's our turn."

On February 2 and 3, some 180 people attended the True Spin Conference in Denver, Colorado, which was billed as "a PR conference for progressives." The event was organized by CauseCommunications, a small Denver PR firm whose clients have included Ben Cohen's Business Leaders for Sensible Priorities, Winona LaDuke's Honor the Earth, and The Progressive magazine.