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Mood meter tracks smiley tweets and frowny tweets

Andrew Burton / Getty Images

A billboard for JELL-O stands at the corner of Grand Street and West Broadway on August 2 in New York City. The billboard acts as a mood-meter by analyzing Twitter and gauging the number of happy and sad emoticons used at any given moment, causing the billboard's face to change between a smile and a frown.

This is pretty silly . . . click here to see the nation's mood, according to Twitter.

Will this become a classic like the famous smoke ring billboard (video below) in Times Square? Only time will tell.