In April, Facebook announced that it was acquiring Instagram for an eye-popping $1 billion. At the time, many questioned whether Facebook was overpaying. (The deal ultimately went through, based on Facebook's stock price at the time, at $730 million.) In the last week, people have balked at new Instagram terms of service, which seem to indicate that the company could sell users' digital photos for use in social ads. Instagram has since said it has no intention of selling users' photos.