People love to stay at Tumblr. The average visitor spends 89 minutes there, tying it with Pinterest at #2 behind Facebook for this metric. And, the number of people taking up the Tumblr habit is increasing: from 6.9 mn unique visitors in November 2010 to 15.9 mn a year later. So, more people are coming, and more people are staying. That’s obviously a powerful combination for the young social media site.
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Source: eMarketer
