Instagram?s User Count Now At 40 Million, Saw 10 Million New Users In Last 10 Days

Instagram received a fair amount of press over the last week. First, 10 days ago, the app launched on Android for the first time. Then news of Facebook buying the tiny startup for $1 billion was everywhere from the Drudge Report to The Daily Show. The attention resulted in explosive growth. Since the launch of its Android app, Instagram's user base grew from 30 to 40 million. That's over 1,000,000 new users a day. Rakshith, the creator of gramfeed, pinged us this morning after noticing the milestone from Instagram's API. The 40 millionth user is valentinoelbuti. It seems at the time of this post's writing, Instagram has exactly 40,026,379 users -- or rather, roughly 5% of Facebook's active user base.

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