Great Tablet, Ok Reader
Well, the Apple philosophy was/is "Real Artists Ship"..BB did just that, but probably without putting much thought into it.
They kind of shipped an amazing "tablet", without much functionality in it.
I have been using the PB for a few months now, before and after OS 2. Loved the OS absolutely. One of the best along with Webos.
It have been using it more for media, than for reading. The media support and sound quality are really good. Battery life/standby time are good too.
The browser is quite ueeable, but kind of crashes frequently.
There is, in general, a dearth of reading apps. I am ignoring Android based apps here as i am a little suspicious of effects on battery life.
I recently got the Book Reader app. This supports both epub and mobi files. This seems a good app actually one of the best(ignoring Kobo Reader)
But in general less responsive to touches. The pages just dont flip on touch/slide. Lots of misses.
Also has less features than a normal ereading app: cant adjust margins or make full screen.
So, as an ereader, the tablet is left wanting. But as a Tablet its really great.