Not primary webmaster shows, but worth visiting for BDSM/fetish webmasters are also:
Fetish Evolution (Essen, Germany) -
http://www.fetish-evolution.de/
Boundcon (Munich, Germany) -
http://www.boundcon.com/
German Fetish Ball/Fair (Berlin, Germany) -
http://www.german-fetish-ball.com/
Skin Two Rubber Ball/Expo (London, UK) -
http://www.skintworubberball.com/
...
I'll attend all above mentioned except the one in Essen, so if there are any fetish webmasters attending any of those just scream here ;)
BNS /
http://www.bondagescape.com/