I do not know, Jan. I think I answered a question from this poster a while back - and am not concerned about lack of thanks particularly - but will not do so again while he/she continues to ignore the request, even when reminded, to put all questions in one post. It is just ignorance, pure and simple - and I also have not yet seen a question that this person has answered.
I will probably go on cutting and pasting the same notice - though I realise I am more than likely wasting my time.