Since 2010, an advertising agency called Mullen has been organizing the Brand Bowl, a sentiment analysis of Superbowl TV ads. The analysis runs live during the Superbowl, and uses an algorithm to calculate reactions to Superbowl ads based on Twitter. Ads are added to the site as they air, and Brand Bowl scores them based on quantity of mentions in tweets and overall sentiment. After the Superbowl is over, a final ranking of the ads is shown until next year's game.