Kindle-friendly PDF from LaTeX

My latest reading device is the $79 Kindle (6" no-touch screen, with ads) which is super-light and small enough to fit in a larger shirt pocket. Today I used a LaTeX template from the blog It's Forty Two (copied at paste2.org/p/1806643) to turn an existing 100 page document into a 300 page PDF that reads quite nicely on the Kindle's small screen and presumable will display well on other tablets, e-book readers and smartphones. The LaTeX package lscape and the command \resizebox were useful to get some of the diagrams to fit the page. I have not tried this for a document with many (long) formulae and I suspect it would be considering putting the entire doc in landscape mode!