T-Mobile has long been a partner of the MLB and really understands the game and its fans. Of course, even non-fans know that the home run is one of the most exciting plays in sports. But what T-Mobile knew was how to activate it. Home Runs for Hurricane Relief, or #HR4HR, got fans on all sides routing for homers throughout the playoffs, donating for every tweet of the hashtag. The result was the single most effective social campaign in the history of the company and a win at the Clios.