So I was checking out Samhain and I come across a book, and thought, "that looks familiar"...
Look at the cover of Real by Katy Evans:
http://www.goodreads.com/book/photo/17617277-real
Look at the cover of Blood Mate by Mina Carter:
http://www.goodreads.com/book/photo/17786832-blood-mate
I'm totally avoiding Real because of all I've heard about it, and when I saw the cover of Mina's book my first instinct was "AVOID!" because it's a photo from the same shoot, just a different angle with some tattoos added. I know stock licensing is probably the only way these authors can afford decent covers, but when readers get that feeling of familiarity, it can backfire in a hurry.