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Dan Zarrella        

Social Media Scientist

Dan Zarrella is the award-winning social media scientist and author of four books: “The Science of Marketing,” “Zarrella’s Hierarchy of Contagiousness,” “The Social Media Marketing Book” and "The Facebook Marketing Book."

He has a background in web development and combines his programming capabilities with a passion for social marketing to study social media behavior from a data-backed position and teach marketers scientifically grounded best practices. One of the first marketers at HubSpot, he spent 6 years at the company, watching it grow from startup to big, public company.

Webinars in his “Science of…” series have drawn upwards of 30,000 registrants. And he holds the Guinness World Record for the largest webinar ever. His Science of ReTweets Report analyzes the when, why and how Twitter users ReTweet things, and explains how marketers can effectively get more ReTweets, and TweetPsych is linguistic analysis tool he built that allows users to generate psychological profiles of any other Twitter user or list based on the contents of their Tweets.

He served as a member of the Boston’s City Council’s Citizens’ Committee on Boston’s Future and has been featured in The New York Times, The Wall Street Journal, The Boston Globe, Wired, Fast Company, Forbes, The Financial Times, Huffington Post, The London Times, The Miami Herald, Slashdot, Smart Money, AdAge, NYPost, The Atlantic, Mashable, The Twitter Book, and TechCrunch. In 2009 he was awarded Shorty and Semmy awards for social media & viral marketing.

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