The popular site allows users to create personal profiles where they can then connect with one another, upload photos and share links. The site boasts more than 150 million active users.
Thousands of indignant members either cancelled their accounts or created online petitions. Among them were more than 64,000 who joined a group called ‘The People Against the new Terms of Service’.
On Monday, Facebook Chief Executive Mark Zuckerberg tried to quell the controversy by saying the company's philosophy is that "people own their information and control who they share it with".