Of course there'd be all the infighting about what counts as a folk venue...

I think this kind of thing works best decentralised, and that more people should set up websites about folk in their own patch, which I've been doing myself for some time. Then maybe some kind of index of the sites on the Mudcat would make sense, and the hassle of keeping things up to date would be up to the people running the local websites, and some of them would be very reliable and others wouldn't, but that's life.