A recent study by app analytics firm found Instagram has become the second-most-popular app behind Facebook globally. It was the most downloaded social app in July across the 10 largest markets it tracks. While the report acknowledged a panel of six (five females, one male) is only a tiny sample, it believes more young people are discussing shifting away from Facebook to Instagram. Facebook acquired Instagram in April for $1 billion, partly to neutralize a fast-rising rival.
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