It may be coincidence but I just tried to answer a thread that had speech marks in the title and the system refused to accept my post. I got this message:
One or more required fields have not been filled in.
Even though everything was filled in. Also I noticed that every time I used an apostrophe it changed to a row of slashes. Maybe this is another point to tell newbies. Unless this is just a quirk on that particular post from Sue n Neil