The Seahawks and Budweiser weren't the only brands that came away with big wins at the Super Bowl. Chevy sped up social media fan acquisition by 500%, and Esurance's big cash giveaway netted it a more than 2,000% increase in Twitter followers, according to data from Ad Age and ListenFirst. "We believe a longer view that looks at the growth of brands' social communities is ... a critical benchmark," said Jason Klein, co-CEO and co-founder of ListenFirst.

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