Honestly! There is no excuse for whoever using bad grammar to communicate with! As for commas, they should be used, whenever there is a need. But like I say, irregardless of whose ever speaking, there is no reason for using bad grammar and the newest offenders are those who misuse the semi colon. We need less bad grammarians and more good ones! I can say this without fear of contradiction because I got my baccalaureate degree in English and that makes me a grammar pendant and cop. If you want to come across as a slob and grammar dummy then I could care less!