I have a B.S. degree in English with an emphasis in technical writing, which is also my vocation. Although I am focused on the technical aspects of writing, I prefer to look at language linguistically. By definition, the manner in which an individual spells and punctuates is always grammatically correct. Language and grammar are human inventions; neither possesses an inherent mechanism that can generate instances of incorrect usage. Nonetheless, communicating by using socially accepted speech should be considered important as it enhances communication, which ultimately benefits the speaker in one way or another.
I work at a non-profit scientific research organization. This involves plenty of interaction with scientists and engineers who oftentimes have a unique take on sentence structure and communication. Additionally, the research they conduct creates an atmosphere of quickly evolving terminology, as new phenomena cannot always be accurately described using existing vocabulary.