In order to make friendly connections to the adults out there, Microsoft decided to make a list of kid-slangs parents should know.

Leet Speek

• Numbers are often used as letters. The term “leet” could be written as “1337,” with “1″ replacing the letter L, “3″ posing as a backwards letter E, and “7″ resembling the letter T. “0″ (zero) will typically replace the letter “O.”
• Characters of similar appearance can be used to replace the letters they resemble. For example, “5″ or even “$” can replace the letter S. Applying this style, the word “leetspeek” can be written as “133t5p33k” or even “!337$p34k,” with “4″ replacing the letter A.
• Letters can be substituted for other letters that may sound alike. Using “Z” for a final letter S, and “X” for words ending in the letters C or K is common. For example, leetspeekers might refer to their computer “5×1llz” (skills).
• Rules of grammar are rarely obeyed. Many leetspeekers will capitalize every letter except for vowels (LiKe THiS) and otherwise reject conventional English style and grammar.
• Mistakes are often uncorrected. Common typing misspellings (or typos) such as “teh” instead of “the” are left uncorrected and may be adopted to replace the correct spelling.
• Non-alphanumeric characters may be combined to form letters. For example, using slashes to create “//” can substitute for the letter M, and two pipes combined with a hyphen to form “|-|” is often used in place of the letter H. Thus, the word “ham” could be written as “|-|4//.”

Leet words possibly indicating illegal activity

• “warez” or “w4r3z”: Illegally copied software available for download.
• “h4x”: Read as “hacks,” or what a computer hacker does.
• “sploitz” (short for exploits): Vulnerabilities in computer software used by hackers.
• “pwn”: A typo-deliberate version of own, a slang term that means to dominate. This could also be spelled “0//n3d” or “pwn3d,” among other variations. Online video game bullies or “griefers” often use this term.

Other common leet words:

• “kewl”: A common derivation of “cool.”
• “m4d sk1llz” or “mad skills”: Refers to one’s own talent. “m4d” itself is often used for emphasis.
• “n00b,” “noob,” “newbie,” or “newb”: Combinations synonymous with new user. Some leetspeekers view “n00b” as an insult and “newbie” as an affectionate term for new users.
• “w00t” or the smiley character o/: A common interjection, analogous to “woohoo!”
• “rox0rs” Used in place of “rocks,” typically to describe something impressive.
• “d00d”: Replaces the greeting or addressing someone as a “dude.”
• “joo” and “u”: Used instead of “you.” This is also commonly written as “j00″ or “_|00.”
• “ph”: often replaces “f,” as in “phear” for “fear” (as in “ph34r my l33t skillz”) and vice versa, such as spelling “phonetic” as “f0||371(.”

Bill Gates is desperate.

Microsoft Security at Home: Child Safety Online