Hi Mike,
Cheers!
While I am here can I just let you know that I really appreciate all the work you put into the majority of your posts.
Mesage 10 of this thread was particularly interesting, and there are many others that you post that go into great detail. So I thought you would like to know, that whilst it appears that the very people you are trying to help appear to ignore most of the messages, I for one read them and follow the links as well. As I have said before, I am not a scientist, I wouldn't get involved in a purely scientific discussion as it I am not equiped to do so, but your posts, and the messages from other people here, have definately improved my knowledge.
Keep it up, while it may appear that certain people 'say' they appreciate your efforts, then take little or no notice of what you post, there are others who are grateful.
Brian.