Instagram was the target of a storm of outrage on Twitter and other sites after the company announced a change in its user agreement that hinted that it might use shared photos in ads. Karly Domb Sadof/AP hide caption

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Jean-Paul Rodrigue/Wikimedia Commons

A photo illustration shows the photo-sharing app Instagram's fan page on Facebook's website. Facebook is acquiring Instagram for some $1 billion. Justin Sullivan/Getty Images hide caption

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