[munk-a]

Eh, I don't like 2D scrolling, it is a lot more of a pain then 1D scrolling - so I think it's a valid problem to try and resolve. That said I also think PDFs are just conceptually broken when it comes to mobile devices - you specifically don't want single format files on that device and, often times, you don't need to consume them on mobile.

[CyberDildonics]

It seems to work well to me so I don't know what you mean by conceptually broken or single format files. Having a single file that you can zoom in and out on was one of the original multi-touch demos in the TED talk, years before the iphone.

I'm also not sure why they are different from anything else when it comes to 'needing to consume them on mobile'.