Laura Hazard Owen of PaidContent coins a term, mathiness, to describe how Jeff Bezos report results on Kindle sales. They tell it in mathematical terms relating to past sales, but we have never actually gotten a single solid number of those sales! I wonder why, surely sales can't be that bad that they have to hide the numbers?
Like the Kindle Chronicles comment, it's related to Colbert's term "truthiness", for a Truth coming from your gut rather than fact. Incidentally, I'm a big fan of those, but I admit they can be dangerous in the wrong hands, for example certain politicians who shall go unnamed (I'll certainly not mention George W. Bush).