-Noun-

1. An individual, though usually middle school/ high school-aged girls (sometimes guys), who use Facebook to ridiculously display themselves in hopes of attracting the attention of a person of sexual interest to them.

Usually found in the badly focused, self-taken photographs that show the individual making absurd, foolish faces that are actually meant to be sexy.

2. Any such person who uses Facebook as a way of maintaining or advertising their love life or lack thereof.

3. An idiot

to sport a boner, fly the sail at full mass, rock hard, etc.

A person who continuously adds 'friends' to their friends list on Facebook, though many-or-most are actually strangers or simply casual acquaintances, solely for the purpose of appearing popular on Facebook: Facehooker
Note: This person's SOLE interaction with his/her new, so-called 'friends' is: "Thanks for the add."

An age inappropriate younger woman who asks to 'friend' random older guys on Facebook for no other purpose than hooking up for cash at later time. Usual repartee involves trenchant conversation starters like "was up?" and "watcha doing?"
See also facecougar

The excessive act of trying to pick up on facebook

Some one who friends everybody that they could possibly know on Facebook and comments and updates their status way too much.

a girl or guy who sell themselves or participates in slutty activities on Facebook.