This is my two cents worth- i think some feel that there are more qualified people to answer so they leave it to them (or perhaps the other way, that the answer is obvious so they wait for someone else to spell it out. Don't think this applies in your case so much). Also people scanning and not commenting probably see the title and read it in hope of finding answers not just the initial problem. Or they are afraid of not being smart enough/knowing enough (esp around some very smart physios in here!) to make some sort of reply. Just how i see it