If we take a can of Spam and call it "Engadget's precooked pork meat product," you'll still know it's the same mystery meat you ate for lunch, right? Under the idea of "private label rights," authors can do just that: sell their works to others who can rebrand and resell them. This week, Amazon cracked down on duplicate ebooks in its Kindle Store, pulling titles because they "diminish the experience for customers." One copycat who got the smack down called it a "kick in the pants" when his 22 titles got yanked. He did, however, admit he had the swift one coming. Aping authors can expect more book banning Kung Fu as Amazon continues to rid itself of "undifferentiated or barely differentiated versions of e-books." Hi-yah!