If you are a serious reader you might dig the fact this reader will let you import in e-books you purchased from other online retailers. (goodereader.com)
This results in your inability to load in library e-books or to load in books you have legitimately have purchased at other online retailers in PDF or EPUB. (goodereader.com)
It is an add - on service allowing you to sell your book through other online retailers. (pothi.com)