There is a great article in the current New Yorker magazine, “The Decline and Fall of the Book Cover” by Tim Kreidel, where he discusses book covers (paper backs) and how most are just boring today. He mentions Thomas Gladwell (who wrote “The Tipping Point”) and mentioned that there is now a Malcolm Gladwell Book Generator! Very funny!
This reminds me of some other interesting websites on this same topic that I have enjoyed. (I have always liked bindings and book covers) There is a digital gallery at NYPL that has some great book jackets.
There is a blog on book covers The Art of American Book Covers.
An exhibition from Columbia University shows all kinds of bindings. There are lots of these kinds of exhibitions (see the fun site “Library and Archival Exhibitions on the Web“ and search for “Book covers and dust-jackets“)
And, I can’t restrain myself. I made my own book cover