These are the slides for a paper presentation I made at the Buffalo Bill in Europe conference June 3-4 2010 at the University of Strathclyde in Glasgow, Scotland. You can read the paper here: http://docs.google.com/Doc?docid=0AQQ9Wxk7JWyQZGRyOHhicGNfMjE0Zmo3OWJ2Zzg&hl=en