While trying to recreate some of the laggy browser rendering results of iPad in the BlackBerry PlayBook vs iPad video, I tried visiting the websites it shows on the only iOS device I have: an iPhone 4. When browsing to the CBS website, I ran into a problem: their website refused to load. I could not care less about what CBS could offer me. But they don’t mind me visiting on the desktop, so why doesn’t it work on my mobile browser? And what does my carrier have to do with it ?