Yes, and I agree what you - in emergency it is pretty good. :)
But making my decision between Nook and Kindle I have seen lots of various evaluations and soon I understand, Kindle is not very good for writing/typing.  You can tweet f/e, but as people say it is still not very convenient.

Bezos recently gave brilliant interview to Charlie Rose. I liked it so much, that even translated for my blog. He is damn true - buying e-reader one should know, what he's buying. Ideal device for reading. Of course you can still use it for web-browsing, check Google mail or something, but that's in emergency as you said.