Came across this while browsing the Interwebz (and haven't seen it mentioned here):
From the link:
Welcome to the 5th Annual
World eBook Fair
July 4th to August 4th
Download Your Selections from (3,500,000+ PDF eBooks)
Three Million eBooks Titles
Our goal is to provide Free public access for a month to 2 Million eBooks. During the rest of the year you may continue to download your selection of about 750,000 PDF eBooks by joining the World Public Library.
*WeBF Sponsored by Project Gutenberg, World Public Library, Baen Books, Internet Archive, MobileBooks, MyeBook, & Wattpad.
I know where I'll be spending a lot of my browsing time...