Leet-speak article:

Rules of grammar are rarely obeyed. Some leetspeekers will capitalize every letter except for vowels (LiKe THiS) and otherwise reject conventional English style and grammar, or drop vowels from words (such as converting very to "vry").

Mistakes are often left uncorrected. Common typing misspellings (typos) such as "teh" instead of "the" are left uncorrected and may be adopted to replace the correct spelling altogether.

In other words, Parents: Your children are slowly becoming more and more retarded.