Of course Sony Reader owners who don't use PCs can't get the free books from Sony. Nor can anyone other than Kindle owners get the version from Amazon (in the absence of assorted hacks).
I dropped a note off with the Suvudu folks (via the "contact us" link) pointing out that it would be really smart to offer their free books in as many different eBook formats as possible. That'd let them reach the largest possible group of eBook buyers. And it would help keep them from looking lame when compared to little tiny Baen.

PDF-only from their own web-site? In this day and age? Sheesh!
Xenophon