2) usually linked to excessive boredom or obsessive culpulsore.
3) Most likeley done by the (13-18) age range
4) A term mostly used when talkin online; rareley said in in person
Josh: Hey man, whats up
Jon: Not much dude, just doin some facebookin'
Josh: Oh word, cool you find anything interesting?
Jon: yah man, did you know that Henry and Margo broke up today?
Usually resulting in you making dumb comments on things without thinking them out or completely misspelling your status.
Son "Ma, gimme a second, i'm just facebookin'!"