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20 LinkedIn Groups Marketers Must Join

|  by Chief Marketer Staff

HubSpot recommends this list of 20 LinkedIn groups to help marketers easily locate important discussions, news and insights.

Marketing Technology Supergraphic

2014 Marketing Technology Supergraphic

|  by Scott Brinker

A Supergraphic that breaks down 947 marketing technology companies into 43 neat categories across six major classes.