Put people in an fMRI machine while reading and interacting with the facebook feed of a celebrity, or person that they dont have personal connection with

Then show people the feed of their friends or family

Then force facebook to change its algorithms until the two fMRI readings show similar level of activation of key areas in limbic system

The real power of facebook is that it exploits the stronger emotional relationship that people have with close friends/family , as opposed to the shallow relationship they have with other public figures, which is what the TV/radio/news exploited in the past