I stumbled upon this link to free Dharma ebooks, published by Pariyatti. There are some really great titles here, such as The Buddha's Path to Deliverance, A Comprehensive Manual of the Abhidhamma, The Discourse Summaries, and many more. Some are available in epub and mobi (Kindle) formats, but all are offered as pdf's as well. There are even editions in Spanish, Portuguese, and Italian.
The books are straight from the publisher, so don't worry about pirating karma! Pass along the link to anyone you think would be interested. If you can, please leave Pariyatti a donation, found at the top of the link page.
Thanks to Pariyatti for making the Dharma available to all.