My fiance sent me a message today that said I was ‘1337′. I inquired as to what that meant, but he wouldn’t tell me. Upon googling to tonight I discovered what Wikipedia says about ‘1337′, or ‘leet’.

Leet or Leetspeak (1337 or 13375p34k) is written form of slang used primarily on the Internet, but nowadays also in many online video games,[1] which uses various combinations of alphanumerics to replace proper letters. The term itself is a degenerative form of the word “elite“, and the language it describes resembles a highly specialized form of electronic shorthand. At first the word leet was used as an adjective, to primarily describe the behavior or accomplishments of others in the community. In that usage, Leet generally carries the same meaning when referring to either the game prowess or, in original usage, hacking expertise of another person. From adjective form its use then expanded to include use as an expletive in reaction to a demonstration of the former qualities. With the mass proliferation of Internet use in the 1990s into the 21st century, Leet has since become a part of Internet culture and slang.

http://en.wikipedia.org/wiki/Leet

Urban Dictionary.com was able to give me a translation of the entire alphabet in this hacker language.

A language in which numbers and symbols are put together to look like letters. Some people create their own 1337 letters and it makes them look more 1337 by fellow 1337-speakers. Here is an alphabet of 1337 letters I know and have created:

A: 4 or l\ or ^ or @ or /\ or /-\
B. l3 or 8 or ß or ]3 or l:
C: ( or < or © or ¢
D: l) or l> or ])
E:3 or £
F: l= or # or ƒ
G:6 or 9
H: # or l-l or (-) or !-! or }-{ or }{ or l+l or )+( or !+! or }+{
L: 1 or ! or ][
J: _l or _/
K: l< or l( or l{ or l<=
L: l_ or ! or 1
M: l\/l or /\/\ or l\l\ or ^^
N: l/l or /\/
O: 0 or () or <> or * or ø or Ó or °
P: l* or l> or |D or l^ or l+
Q:& or (\) or ¶
R: l2 or ®
S: 5 or $ or §
T:+ or 7
U: l_l or /_/
V: \/
W:|/\| or \/\/ or |/\/ or \/\|
X: >< or }{ or :-:
Y: ¥
Z: 2

()/\/\9 7^l+l+ 15 73)-( 1337 #l\:-:<>l2 1 +()l_l> _/<>* ^l3°l_l+ /\/\3}-{ #1213l/ll>!!!1!!11!1!! )+(3 |D\l\/l/l2.

translation:Oh my god that is the leet hacker I told you about my friend! He owns.

So now you know a little bit of info when someone says that you’re ‘1337′. And you also know how you can write to other people as well! If I were you, and I wasn’t a hacker, I probably wouldn’t go trying it though. Some people might get a little testy about stealing their language?