Esurance, which ran an ad immediately after the Super Bowl ended, received more than 2.1 million tweets using its hashtag #EsuranceSave30, and 200,000 of those tweets came in the first minute.
Viewers tweeted that hashtag in hopes of winning $1.5 million -- the 30% discount the company saved by running the ad after the game. (Ads during the Super Bowl fetched somewhere north of $4 million.) In addition, the American auto insurance provider increased its follower count by 90,000 since the commercial aired. As of this writing, the @esurance account had around 120,000 followers.
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The brand was also the top trend on Twitter for most of Sunday and was still in the top trending topics on Monday morning. The campaign has received 1 billion impressions, according to Esurance's ad agency Leo Burnett. A fake account has accumulated 215,000 followers in the past 10 hours.
John Krasinski, who stars in the ad, will reveal the winner of the $1.5 million on Jimmy Kimmel Live on Wednesday after the contest's 36-hour period runs out.