Facebook recently faced widespread criticism for conducting a psychology experiment on about 700,000 of its users without their informed consent. In the study, Facebook researchers manipulated users' moods by exposing them to more positive or more negative posts than usual.

Now CNNMoney reports that Facebook has been engaged in a more benign and possibly beneficial psychological experiment.

The company has been under pressure to address the growing problem of "cyberbullying" among young people. It also has been looking for ways to help users address their conflicts and disputes themselves rather than enlisting the company as mediator.