Although there is sometimes an attempt to make it synonymous with "hacker", there is no wide acceptance of this in the real world. Circles where it might be accepted as such will not be among true hackers, but instead "crackers". aka skript kiddies, skript d00dz, losers, lamers, sad fucks with a sad sense of entertainment who basically spend hours racking their pin heads on pranks they don't often even witness.
human: "stfu, jackass"
N 2. The art of hacking
N 3. A script kiddy who is a self-proclaimed hacker, because he defines himself as a "hax0r" and speaks in "l33t"
Note: Most hackers rarely use leet, it is often a trademark of programmers who are either inexperienced, or want to be hackers. One who is haxor rarely goes by "haxor" or any other derivitave. It is a title given by another.
<haxor> mwahahahahaha, pandas rule
1) Used as a term of appreciation
2) Humour, insult
3) To reveal the truth that you are a real newb
4) As a war call or to cheer another on.
2) That newb is l33t h@x0r.
3) i r l33t h@x0r! All that neon light adds at least 15MHz to the system. Serious! Mitnick told me it does on IRC.
4) Haxor! Haxor! Haxor!
Note: Most real hackers would not try to make something bigger than it really is by trying to spell it L33t. (also one would not brag about being a hacker as its something called "illegal")
<L33t-D00d-420> Fux u, cock sucker, I own u, I AM MASTOR HAXOR.