I've visited a fair nunber of sites people where people argue and sound off and exchange information - but this is the only one I've come across that I'd think of classing as a community based within the Internet.

The shared, if varied, interest in folkmusic (and certain qualities about folk music, especially it's collective aspect, and the absence of boundaries between performers and listeners) provides a basis which allows differences about other things to be aired without breaking things irreparably.

What brings us together and holds us together is more important than what pulls us apart, and I think that is necessaary for anything that can really be deemed a community in any setting.