
"2) Reread your text before you post it. Would you understand the intention of your text if you were someone else?"
I don't think anyone understands the intention of other peoples text or sayings, no matter how articulate it is. In fact, the more elaborate a text is, the more difficult it is to comprehend the core statement. If this is true for me, then it must also be true for some others.
Other than that, it's not your duty to look after the less able. I too am preaching about the intention of communication (to be understood) and prefer a grammatically correct text i can learn from.