Apple Insider's data provider, Jeff Tribble, has showed up in the comments and answered an initial email. He says he is the Jeff Tribble who started Streamwaves, one of the first legal streaming music services, and that he's now doing something with search engine optimization that gives him access to Google Analytics on "tens of millions" of pages.
For what it's worth, my gadget review site that's been around for five years is not seeing the pattern that Tribble described. For the past 30 days compared to the end of 2010, iPhone visits are up 217%, iPad visits are up 117% and Android visits are up 518%. Android visits now exceed iPad visits and are closing in on iPhone.