Mark Zuckerberg leveraged Facebook user data to fight rivals and help friends

The documents, which include emails, webchats, presentations, spreadsheets and meeting summaries, show how Zuckerberg, along with his board and management team, found ways to tap Facebook’s trove of user data — including information about friends, relationships and photos — as leverage over companies it partnered with.

However, among the documents leaked, there’s very little evidence that privacy was a major concern of Facebook’s, and the issue was rarely discussed in the thousands of pages of emails and meeting summaries.