I don't know either. It's a topic I've started to write about it but not sure where it's going. I think C88 is one of the original events. There are quite a few that are old, but lately there has been quite a few news ones, and not all are advertised on Seraphim, so it must be a profitable business. I think last year Tres Chic has one of their events themed after sport/gym and I was so looking forward to it, but there was like only a couple of things related to the theme. I was talking to a designer the other day and she said she much prefer when she is not given a theme because she can just create whatever comes to mind.