So I love my kindle and all that, but the PDF reader is quite bad. I mean, you have fixed zoom and fixed scroll. News about amazon fixing that?
By the way, if someone is having the same problems, and hates to find so many PDFs with white annoying margins, you can use the tool BRISS. It is a small tool coded in java that let's you cut the margins and more stuff. It is really simple, fast and useful, try it.
http://sourceforge.net/projects/briss/
However, I find a bit sad that Amazon doesn't have something like "paperback - ebook" program. Like if you buy a paperback book, you can buy the ebook for just 3 dollars more, but not the "full price". It happened to me with "Wizard: The life and times of Nikola Tesla". I paid 21 for the book and now the price is 9 for the ebook. I would be interesting if Amazon knows wich books you bought and then, get a discount on the ebook equivalent.