In the first quarter of 2014, mobile ads generated $1.3 billion in revenue, accounting for 59 percent of Facebook's ad revenue and 53 percent of the company's total revenue. Even more impressively, mobile ads accounted for more than 90 percent of the company's revenue growth compared to last year's first quarter. So apparently Facebook's mobile ad business has evolved to become the company's primary growth driver. Growing a multi-billion dollar ad business out of thin air in less than two years is a pretty impressive achievement, one that Facebook's shareholders will surely appreciate.
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