i tried copistar last nite and it produced a nice looking pdf. i'm also able to set the page-size of the output pdf so that it matches my sony reader. by using a big font size, the tool produces a pdf that is quite readable. i just copied Pillars of the Earth which is a big book. it produced a pdf that was 73mb! that's pretty large. it takes forever to turn the page on my reader. i can press the page turn when i'm halfway through the page and it read the rest of the page before it actually turns! crazy.
as for transforming the pdf into lrf directly, i don't think it will be possible because the produced pdf doesn't seem to contain true text. the pages appear to be just graphical.
i'll look into something like that kleptomania tool or something to see if i can get the text out and produce a smaller sized book file for easier reading on the sony reader
