A person who is so frustrated in his/her real life starts to assume different personality on Facebook. The purpose of doing this is multifaceted: to get wrong sense of self-esteem, to bluff that he/she still matters, to gain attention, to stay connected with friends who otherwise would not be befriended, etc. The facebook star is usually shy and aloof in public, not eloquent, but photographs well, likes to observe people. The person constantly thinks about what he/she would write on the wall or which photo to put during the day. Facebook start may or may not have a lot of friends on the list, but once the popularity goes down, he/she gets stressed. Any attention, be it negative or positive is good enough for him/her.
He lost a job and turned into a facebook star all of a sudden.