[FizzyWater]

For me, this tool worked for every eReader book I purchased, and almost none of the eReader books that had been offered as "freebies" over the years on that site.

I've so loved being able to read my eReader books on my Sony (after converting them), that I haven't been bothered that a small handful don't convert. Especially, since eReader's giveaways have almost all been classics, and I can get them elsewhere for free (including here!)

(And if Astak ever gets around to releasing its new e-Ink devices, I won't even have to convert my books any more....)