Comment by ta7000

It's not. And that shows just poor education. Differently from the US, in Spanish we have the RAE (Real Academia Española). That dictates and gives guidelines on how to write so most people will understand what you are writing. The fact that you are having these issues just shows poor education, these topics have been discussed, and they are clear rules to avoid this non sense. Don't invent rules, read what has been already created for you to write clearly in Spanish.