What Is Your Biggest Book Pet Peeve?

Here are the results from a Goodreads poll.  Did your peeve make the list?  I know some of mine certainly did.

Library Love Fest - Books, Books and More Books

Need some reading inspiration? Poke around this useful site, from classics to sci-fi and everything else in between, Library Love Fest has it all.  http://www.librarylovefest.com/