yeah, it's convenient but I get eye strain pretty easily. if you happen to have a kindle, hatchet does the same thing for it. it's a much better platform for reading text. it costs $0.15 per use via Amazon's conversion charge though.

http://hatchetapp.com/

I've gone the other direction. I have the latest Kindle but I don't bother using it - I read all my Kindle purchases on the Iphone. It's always with me and I love the screen. I would sell it but I think I have to have one active to purchase items for my account.