Chapters promoting 50 Shades of Grey makes me sad. Why?
Because of this:
http://www.thebooklantern.com/2012/03/curious-case-of-50-shades-of-grey.html And this:
http://dearauthor.com/features/industry-news/master-of-the-universe-versus-fifty-shades-by-e-l-james-comparison/ I love fanfiction, I write fanfiction, but under no circumstances is it acceptable to publish fanfiction by copy-replacing names and claiming it's original work. ESPECIALLY not when Turnitin is stating a similarity index of 89%.
You can claim your work is original but the fact is you intended to base things off pre-existing characters. Sure, they may have more personality but originally, the thought was to use them.
I'm not going to touch the content as my opinion on Twilight is less than impressed but I don't condone this sort of thing on any level. There's that one self-publishing company reaching out to fanfiction writers and I can only see it bringing unwanted attention to fandom and increasing the number of authors who feel the need to ban fanfiction for this exact reason.
They did the work to create a universe/characters and you loved it enough to want to write about it and play in that sandbox. The least you could do is respect the author enough not to go making money off of it. Write your own damn universe and characters.