SAN FRANCISCO (Reuters) – Facebook Inc grew mobile advertising revenue several times in the third quarter, a faster-than expected pace that helped reassure investors that the world's No. 1 social network is beginning to figure out how to earn money off smartphone and tablet users. The company now gets 14 percent of its advertising revenue from mobile ads, translating into more than $150 million — a surge from an estimated $40 million to $50 million in the second quarter and almost nothing in the first. …

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Facebook mobile revenue grows faster than expected