Actually the whole "Comment" portion on our items should be tied into the current PM system so that not only are you notified of questions on your items but you can also reply to people who send them. Currently you can't really reply to any question comment on your items because frankly, it's doubtful that the comment leaver will ever return to that item to see if it's updated with a reply comment without some sort of notification system where he is notified that you have replied.

It is a miracle that curiosity survives formal education. - Albert Einstein