To me, when it comes to book covers, less is more. I think book covers often detract from the book itself, rather than adding to it, or adequately reflecting it. I've been known to throw book jackets away, preferring the simple hard back to the flashy outside. (I often have a similar feeling when it comes to people, but that's another discussion.) Sometimes, though, book cover designers really knock it out of the park, and make me drool with their creativity, subtlety, and eye for the aesthetic.
Here are my favorite covers of books released in 2013. Not my favorite books, just my favorite covers. (Thanks to Jenny from Wonderous Reads for the post idea!)