Here is a public service document in Adobe Pdf format http://bit.ly/Ebook4PcPDF
UPDATE 7 September 2013 The CLEAR Direction of ebook reading is shifting FAST to Epub(open standard) and Android Smartphones. Word of advice - Keep the content light, tight and text based and watch this channel for more on that direction.
Which lists the locations of those Free Ebook readers for the top four most popular formats.
Go figure huh?
This is a Philanthropreneuring YoU Special Project see http://bit.ly/PhilYoUEnroll
And then we have the Ebook4Good edition which comes with Hangout support here http://bit.ly/SocRespEbook2013
Or As a Gift For Your Socially Aware Community Writer, Author, Self Publisher or Activist http://bit.ly/EbookNicheGiftSW2013
Please consider joining our Google + community for weekly Hangouts4Good http://bit.ly/Ebooks4Good