Bill, Wild Rover will fit into both categories - as far as most folkies are concerned it's a definite no-no, and as far as the great British public is concerned, it is the ONLY folk song there is.

I wouldn't dare sing it at a folkie gathering (but I did sing Wild Roving No More at Alcester this weekend), but we don't half belt it out with the morris men if we get a song session going in a pub.