I don't think that most of us are concerned about the credentials of inquirers. I take them all at face value and answer if I have information. For me, the fun of genealogy is trying to put together puzzles, communicating with others, etc.
Whoever the English Taubmans are, I would be very happy to provide any info I have on the Isle of Man side. I have a friend who is a Taubman researcher and I have quite a bit of his info. However, I know nothing about the English side.
I do object to the spam that is put on the bulletin board.