Try and see if you can make Dan Harden and Mike Sigman interested in the place. If not, you won't get that much activity and the situation here won't change much either.
I agree with David Skaggs that Aikiweb is being used for self promotion, in a way that doesn't always look very pretty.
What Hanna said. If the goal of the IS people is to discuss IS, I'm not really sure why they're here in the first place, but hypothetically, if a space were created for them, they might go play there. Or, they might not. Who would their audience be? Presumably there are other IS/IP/IP/IQ/whatever people out there on the interwebs, right? Or maybe not. If there was
an audience, it seems like a forum would have been created by now, but who knows? If what you really
want is a soapbox, a vehicle for self-promotion and a handy pot to stir, Aikiweb is serving that function, and there's no reason why the ISTPQ contingent would go elsewhere.