I use MobiPocket every day to read books and magazines on my BlackBerry. Its great to always have a book in the bathroom too. 
The thing is that e-books get a bit expensive if you read as fast as I do so I found two great resources for free books.
www.ManyBooks.net – This site was first was brought to my attention by Josep. It is a great resource where you can find public domain books. The best part is that you can download them directly in MobiPocket format.
www.Gutenberg.org – This is the project Gutenberg website with over 25,000 free books to download. You will have to convert the books into MobiPocket format using the free desktop application.
Let me know if you find any more… Don’t forget to pick up MobiPocket E-Book reader for free from www.mobipocket.com or m.mobipocket.com from your BlackBerry.
cchermeg Not Registered
Posted: June 2, 2008 at 6:00 PM EST from my BlackBerry 8310
Thanks for the info on e-books.I’ve had my BBerry for a month now and don’t know how I existed w/o it!!! Now it can even go to bed with me since I always read before lights out.Wpnderful little invention!!
JCallah Not Registered
Posted: April 10, 2009 at 10:35 PM EST
Baen books http://www.baen.com has science fiction and fantasy books available for free as well.