A---, it appears that it's been discovered to not be a copyright issue after all, leaving it as "just" a phishing scam (I haven't heard any evidence of malware being involved, but I wouldn't be surprised) where they're using the names of professional (and other) authors and the titles of their works to draw in the scamees. Specifically, it seems that Ebooks-tree does not actually possess any works on it but instead is charging people just to follow a link back to where the works are hosted elsewhere. V---, this may explain why it's your samples that are already up Book View Cafe, as you mentioned to me before. I first saw this discovery through a fan works blog, and here's their post on it:
http://ao3org.tumblr.com/post/116431401158/ebooks-tree-update
However, even better news is that it seems Ebooks-tree has removed many authors' names and book/story titles. Many of the professional authors who I previously found on the site are no longer listed. Yay!
Yeah, if you haven’t looked at the page recently, it looks like they did take down AO3 authors and all the pro authors whom I’d seen on there before. Now go run a virus scan and check your browser extensions haven’t been changed.