"Hacker" would end up as "H4x0r", for example. This enables coders and programmers especially to circumvent filters and speak about topics that would usually get banned. Variants of leet have been used for censorship purposes for many years for instance (ass) and "$#!+" (shit) are frequently seen to make a word appear censored to the untrained eye but obvious to a person familiar with leet. It is also sometimes used as a scripting language. More obscure forms of leet, involving the use of symbol combinations and almost no letters or numbers, continue to be used for its original purpose of encrypted communication. Some consider emoticons and ASCII art, like smiley faces, to be leet, while others maintain that leet consists of only symbolic word encryption.
It is now also used to mock newbies, also known colloquially as n00bs, or newcomers, on websites, or in gaming communities. Once reserved for hackers, crackers, and script kiddies, leet has since entered the mainstream. Creative misspellings and ASCII-art-derived words were also a way to attempt to indicate one was knowledgeable about the culture of computer users. One theory is that it was developed to defeat text filters created by BBS or Internet Relay Chat system operators for message boards to discourage the discussion of forbidden topics, like cracking and hacking. The Cult of the Dead Cow hacker collective has been credited with the original coining of the term, in their text-files of that era. Leet originated within bulletin board systems (BBS) in the 1980s, where having "elite" status on a BBS allowed a user access to file folders, games, and special chat rooms. 5.1 Terminology and common misspellings.