Here are a couple of my more memorable horror stories:
When I got a review request for this book...: http://www.amazon.com/Twin-Soul-Became-Prostitute-Story-ebook/dp/B005M323GO The cover is horrifying and well doesn't really sound like my kind of read and I had to email the author twice to politely decline...
Then there was an anonymous comment on this review that really ticked me off: http://bibliognome1.blogspot.com/2011/11/ragged-rising.html
