I think iPad apps like Flipboard may turn out to be one of the best things to happen to accessibility in quite a while. Not because they are accessibility tools themselves, because they are not. No, this is a bonus for accessibility because it will let users who would never think about accessibility see the consequences of bad code. Good semantic code with all the style controlled by CSS looks wonderful when it's pulled into Flipboard. Poorly written code using inline styles, spaces, and other tricks to control the design don't fair so well.