Since news of the Facebook mood manipulation study came out, the Internet has been up in arms, accusing the company of ethical wrongdoing. While CEO Mark Zuckerburg and the public relations department have not commented, second-in-command Sheryl Sandberg issued an almost apology. We have not received an apology from Mark Zuckerburg because he, too, is not sorry. Facebook is fundamentally in the business of mood manipulation, although it generally takes the form of targeted advertising.