[‘07 rank - #6]

Being the leader of a stalwart agency like Weber Shandwick is noteworthy in and of itself, but Harris Diamond's CEO role at IPG's CMG division truly cements his place on this list. Diamond's post at IPG gives him oversight of other marketing services. By virtue of his ascendancy at the holding company, Diamond has enormous influence in the way IPG and, as a result, the wider industry, considers PR. While the holding company's other disciplines ...