Instagram put Facebook ahead of Twitter in photo-sharing
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　　Instagram, the photo-sharing app owned by Facebook, has expanded by more than 50 percent this year, overtaking Twitter with 300 million monthly active users taking, editing and sharing pictures on the social networking site. 
　　
　　Instagram讓Facebook在照片分享領(lǐng)域領(lǐng)先Twitter
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　　Facebook旗下的照片分享應(yīng)用Instagram今年擴(kuò)大逾50%，該社交網(wǎng)站以其3億月度活躍用戶拍攝、編輯和分享照片的規(guī)模超過了Twitter。