Do any of the posters pouncing with glee upon Spud's admission
that he is not an expert on railway geography and track layout in
North London genuinely believe this forum should be a narrow,
exclusive club for railway experts?

An Internet forum is at its best when it has a wide variety of
members with differing levels of knowledge and a broad range
of questions. The proper purpose of an Internet forum is to provide
and exchange information and opinions.