Man I love PROJECT GUTENBERG, the first and original free ebook site, created by the creator of the ebook himself, the late Michael Hart.
And then the Kindle came along! The stage was set for old science fiction wonks like me to find reams of schlock -- science fiction pulp classics (and not so classics) for the taking!
Browsing the cyber files of Gutenberg is like panning for gold. You never know when you are going to score an incredible, forgotten SF golden nugget.
Unfortunately, you also have to wade through a lot of crapoola -- works of science fiction that never deserved to be reincarnated in the wacky afterlife of online libraries.
Case in point: See my review here of CREATURES OF THE ABYSS.
FIND THE BEST SEO WRITER HERE: BEST SEO WRITER