Someone (mostly people in Anonymous) that seeks fame and the spotlight to feed their pathetic ego and/or fill their empty pockets. A famefag often tells some type of smockery to get that fame. The Dragons Den is one of the most obvious examples of famefags on Twitter.
A person who plays one or more of the game applications on Facebook. Usually these people become very annoying with their constant game posts about what they need for their Farm, Fish, Mafia, Pets, etc. Such players also tend to spam inboxes with game invites and so called "free gifts".
Joe: "Man, Kate is really annoying me with all her posts. I can't see the important posts on my wall anymore because of her. She has really become a Facegamer"
Kevin: "After being laid-off for a few months, I really became a Facegamer and it kind of sucked to go back to work"
a feeling of dread or disgust at seeing that two of your Facebook "friends" who have no reason to know one another have become friends with each other on Facebook, likely as the result of online flirting or a sexual encounter.
While looking through my Facebook news feed, I had to facegag when I noticed that my ex was now Facebook friends with the the town slut... who just happens to live in a town2000 miles away that my ex recently visited.
A self-declared hipster who possesses all of the following traits: an unquenchable desire for fame, shamelessness, lack of redeeming talents, and an abundance of non-redeeming talents.
"(That later trait) may include, but are not limited to: oversharing, self-regard, delusions of grandeur, superficial physical attractiveness, a ridiculous distinctive personal fashion trademark, the ability to talk about oneself without end, conspicuously false modesty, and sluttiness and/or man-whorishness."