STEVEN.Q> so, i herd u liek intehnet memes

Leet, Leetspeak, 1337, Leetors, 13370rz... Wut am i doingz?!!111

Leet, an internet slang created from the word "elite", comprises the use of replacing various Latin alphabet letters in words with ASCII characters and numbers. Back then, the status of being "elite" on public boards meant you had access to file folders, and games, and other things, but later resulted in sharing of pirated software, pornography, and unsafe and illegal topics. Now, leetspeak is commonly used, especially on online games, to communicate as a "language" with others, displaying a person's knowledge of the language, and their sheer stupidity and immaturity to not communicate in normal English. >_>

1337 is an example of common leetspeak form of "leet", as the numbers look very similar to the original letters. Leetspeak does not also restrict to ASCII character replacement, but misuse of words and spelling as well. Such examples include:

Pwn (pwnt, pwned, pwn3d, etc.) - derived from and pronounced like the word "owned", which is stated whenever someone soundely defeats someone else and taunts them ("Ha! You got pwned!")
Noob (newb, noobie, n00b, etc.) - from the word "newbie", meaning as in someone who is new and inexperienced, opposite to someone who is "1337" or "elite". It's commonly used in boards or games to flame someone for their failures as a new member, but can be forgivable as they develop
Haxor, suxxor, roxxor, etc. - the use of the suffix, -xor, can be used as a replacement to the suffix, -er, usually to describe someone of what they are. Haxor indicates someone who is a hacker, or someone who has accomplished something so amazing that it is assumed they "hacked". Suxxor and roxxor are basically meant to describe someone who sucks and rocks.
OMG, LOL, RLY, WTF... - acronyms that are connected to leetspeak, meaning "Oh my God", "Laughing out loud", "Really?", and "What the f---", respectively. Online communities have sprouted many other of these acronyms, all used for their convenience to type instead of typing out the whole expression.

There is so much more involved in the leet language, but one thing to remember is that using leetspeak nowadays is considered very immature and idiotic, and you will be flamed as a noob if you do use leetspeak. Wikipedia's article on leetspeak is pretty comprehensive, and gives a lot more in-depth info into its uses, terminology, etc.

Btw (by the way), this website's name, "Intehnet Memes", uses leetspeak: "teh", an intentional mispelling of the word "the". Even though it's not supposed to be "Inthenet", I find the replacement to be suiting.