In and around Nottingham, we could be suffering imho from a bit of overload. One excellent folk club had an audience of five - the performers outnumbered them by one - for a feature night recently. Main reason appeared to be that another club had just started up nearby, and was putting on well known local groups, free, in order to promote a local festival. I also find that I am one of several people who tend to wander round the many clubs here and bump into each other all the time, so it is becoming a bit incestuous. If I wanted to, I could be at a club every night of the week, and some nights I have three to choose from. All of these folk clubs present a variety of music - most booked acts are in the folk tradition, though sometimes that's the American folk tradition, but there is no accounting for what people perform at folk clubs. I have heard everything from trad finger-in-the-ear stuff to Mad World, and Ziggy Stardust! Which is great.