Congress wants to 'inflict pain’ on Mark Zuckerberg. Is he ready for it?

• Facebook CEO will testify before committees over data misuse
• A major test for Zuckerberg's communication skills
• Mark Zuckerberg testifies before Congress over Facebook data scandal - live

Mark Zuckerberg would like you to know one thing - Facebook messed up. During a rare press conference last week, Zuckerberg was grilled by journalists over Facebook's privacy lapses. His message was consistent: mistakes were made, he takes responsibility and the company has made sweeping changes to better protect user data.

"We didn't take a broad enough view of what our responsibility is, and that was a huge mistake. It was my mistake," he said.