I understand that from a song collection point of view that categorisation is important, I'm not suggesting otherwise.
I'm also (and never would) argue that contemporary songs are traditional.
My point is that we have different needs from the terminology we use....mine is to try and communicate to as wide a number of people as possible to get them interested in something they might like.
Yours (I think, again, please correct me if I'm wrong) is to be as specific as possible to preserve and understand traditions as clearly as possible. I accept that this as at least as (and probably more) worthwhile than what I'm doing.
Ask a person in the street what is meant by folk music....and you'll get many different responses....I need to try and interest all those people. Giving them a lecture on what is and isn't folk music is not the starting point to getting them involved.
"Col - whoops Banjiman." The subtlety of this one is lost on me???