A wave of celebrities have taken to Twitter to criticise Instagram.
Prominent US actors and musicians were among those who declared they would be deleting their accounts following a new clause which sparked fears the photo-sharing app could sell users' pics to advertisers without consent.
Singer Pink told her 12 million followers: "I will be quitting Instagram today. What a bummer. You should all read their new rules."
But the tables turned, with DJ and music producer Deadmau5 posted a picture of a raised middle finger with the words: "Here you go Instagram, feel free to sell this posted photo for cash. Thanks for selling me out."
Canadian model Coco Rocha wrote that she was "horrified" by the new policy and said the idea that Instagram could sell your photos for free made them the "worst modelling agency" in history.
But Instagram now says it plans to modify its terms of service in the wake of the backlash from users.