Interesting infograph from Goodreads:
What Makes You Put Down a Book?
http://www.goodreads.com/blog/show/4...ut-down-a-book
From a writers point of view, I think this is revealing. Notice that very few people in this survey put a book down due to bad editing for example, yet that is one of the things most authors seem to scream about in their advice, "make sure its professionally edited" and etc. Not saying do not have your books edited, it is just an example.
What are your thoughts?