>>Everybody in this here Café with two clues knows my full name, occupation, address, education, music and so on.

I don't know about the two clues part. But I will vouch for the fact that gnu is certainly not hiding his identity.

I perhaps could have avoided this blow up by speaking sooner, But I wondered what, given the treats he had made Jack Campin would do with the information.

For your information, small outbursts not withstanding, Gnu is as good and pure a soul as you will meet on this forum one of the best things you could possibly do on line is to be friends with him. In person is apparently another matter, but I see who he wants to meet in person as totally his call.