I have just registered today because of the announcement of the tall screen sized pocketbooks.
I am a student from Germany who is going to pursue his Masters starting from October. For my Bachelor thesis I had to read quite a lot of material, mostly scientific papers you can get from the various journals. I guess, that is not going to become less during grad studies. :-) Therefore, I am extremely interested in a reader which can display a whole page, so that I don't have to fire up my computer or waste paper on printing all that stuff.
I am fluent in English (teaching was held entirely in English during my undergrad), and native in German and Russian.
I am using Linux for about 5 years now (if that is revelant in regards to the software testing).
Albeit a new user on this board, I'd be very interested in helping you guys test your new product. :-)