There are just a handful of CMOs who are as Twitter-happy as Jeffrey Hayzlett. The Eastman Kodak marketer, who has around 16,000 followers , is more than just the lead marketer for Kodak; he’s also often its prime defender, throwing verbal jabs at rival Hewlett-Packard as the two exchange claims over printer ink costs.

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Jeffrey Hayzlett of Kodak on HP, Why He’s on Twitter (BrandWeek)