Not only does ManyBooks.Net have lots of free ebooks for the Sony (and others like the Kindle), it also has books in languages other than English.
Thanks to my Sony-505, after more than 42 years since I finished my third year of French (in high school and college), I am now reading ebooks in French. I read the French version on my Sony and have the English version on the Connect software on my laptop for comparison, and am logged into a super French-English dictionary on the Internet to aid the process. (
http://www.wordreference.com/fren/ ) Check this free site out if you need a foreign language dictionary (they have other languages). It recognizes any verb regardless of the tense you enter in for the search. And whenever you look up a word, it gives a slew of uses in combination with other words - idiomatic expressions - and even links to their foreign language forum where people help each other with complex translations.
The first book (Jules Verne - Journey to the Center of the Earth) is a real challenge after so many years since my exposure to French, but it is coming back. If it hadn't been for the Sony, I never would have even attempted this.
The rationale for attempting to get back to using French is that my neighbors (5 months a winter) at my RV resort here in Florida are from Quebec and they are fluent in French and English, and I thought it would be great to be able to communicate with them in French. Plus they are a great resource, and it makes sense to make use of them. And I have a pen pal in France as well and we chat over Yahoo messenger a lot.
Just a side effect of the Sony reader and the Internet.
Bob