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One of the fastest-growing iPhone apps is a trivia-driven social network, in which niche audiences challenge each other on all manner of topics in hundreds of categories.
 How Much Do You Know About One of the Fastest-Growing Apps on the iPhone? www.adweek.com QuizUp is among the fastest-growing apps on the iPhone, and it barely spent a penny on marketing. That’s rare for a game industry that invests to boost app rankings and push installs. But QuizUp has become more than a game. |
