Here are some links on what they are. I sort of look at them the same way until I started to find out that very much like hardboot snowboarder, they are a very small group, fairly close knits, with small production products, not unlike hardboot snowboards.
http://en.wikipedia.org/wiki/Skiboarding
http://www.skiboardsonline.com/html/sport.htm
How they feel when you call them snowblades:
http://www.sbol.ws/vbulletin/upload/showthread.php?s=&threadid=1218
Bomber Elite Snowboard bindings (note: same reputation there as here for Bomber bindings, and the majority of people there don't snowboard):
http://www.skiboardsonline.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=bomber_elite&Category_Code=bindings
As a side note, I bought them planning on using them for snowkiting in the near future, as they are wide and non cumbersome and definitely carvable.