I had a demo of it from our reseller in the UK. We are not yet on the Revit gravy-train, so bimtrack will be a way off as yet, but the features, project tracking and snagging and a whole lot of other functionality relating to project information dissemination looked almost idiot proof.
Not that I can get any of the bosses here to understand why it could be useful... the default response is along the lines of "well we have email, so I can't see how this bimtrunk thing could be any better, not in a million years."
They've only just adopted marking up the occasional drawing on an ipad

First impressions though, I can see the possibilities of a tool like bimtrack, that is designed with software integration in mind. Looks good.