Mudcat is a forum about Folk Music. The fact that it was started by an American doesn't really mean anything. The internet has no boundaries, which I think is one of the nice things about it. There is nothing to stop Americans from posting about American folk music and if you do a search I think you will find there are plenty of messages about American songs, the American folk scene, etc. Personally I enjoy having an insight into how things are on the other side of the Atlantic, and I'm glad the Brits are here.

But you know, there's nothing to stop you from starting your own Forum with whatever membership criteria you choose. If you want a free option start a Yahoo Group called "American Folk Music Discussion". Make it members only, with you as the moderator. That way you decide if you let them in or not, and anybody who is a foreigner can be refused admission. If they somehow sneak in anyway and give themselves away by saying something like "rubbish" or "sod it", or spelling "color" as "colour", you'll be able to spot them and kick them out.