Hi, yes I've been using it. I agree it has the potential to be incredibly disruptive and those it will disrupt truly deserve to be disrupted. I set up a forum for openbazaar, feel free to advertise there for free, and help generate some discussion too.
http://openbazaar.tk/I got snowed under with work lately so haven;t been able to do it the justice I should have..
Version 2.0 is coming up soon and addresses a lot of the previous shortfallings I think.
All the best and hope to see you on the site!