In the dog-eat-dog world of competing corporate reputations, one tool has stood the test of time: the PR firm. And nowhere is good PR help more valuable than in the compliance-governance-and- sustainability-dominated Corporate Responsibility market. Here’s CRO’s Top 10 PR Firms in Corporate Responsibility 2008. But don’t jump right to the list. First, you’ve got to read about the tragically ironic thing that happened on the way to the final rankings.