For those that aren't on Twitter, it has recently been revealed that Emily A. Duncan (author of the Something Dark and Holy series) is a bully and racist, especially towards Asian and Eastern European countries. This came about in the midst of discussions about racism towards Asian authors in the publishing world were happening. If you want a list of things she's done then I suggest taking a look at Hafsah Faizal (We Hunt the Flame) and Rin Chupeco's (The Bone Witch) Twitter page. But a summary:
The Book Lover's Coffeehouse 