Forbes - Let's get one thing out of the way - no one is forcing you to use Facebook. While it certainly provides a sense of community and interconnectedness to some, it's not a mandatory part of being human (or even being social, for that matter).
This study comes on the heels of last year's research from advertising scholars at Texas Tech in the journal Computers in Human Behavior suggesting that a user's self-esteem influences their self-presentation on Facebook.