The title doesn't have to be known exactly as a "Chief Content Officer," but the role is crucial.
Here are some titles in other companies:
Cisco – Content Evangelist
Incept – Content Engineer
Quality Logo Products – Content Marketing Manager
Radian6 – Content Community Manager
Johns Hopkins – Web Content Coordinator
National Instruments – Content Manager
Who is best to fill the role? Pulizzi says a "source journalist," who have "a nose for the story." And these people can be found within a company – maybe from another department – who blog and publish themselves.
They can help when developing a sort of online marketing vehicle that comes off as a "trade magazine" and think in terms of what readers (customers) want.