Skiffy - a huge collection of classic science fiction book covers, featuring the likes of Chris Foss, Bruce Pennington and John Schoenherr.
Charles Stross exposes some common misconceptions about publishing. How Charles Stross got into the writing game.
Good Show Sir - a blog of the worst science fiction and fantasy book covers from the deepest depths of second hand bookstores around the world.
The Art of Penguin Science Fiction is a historical guide to the design of book jackets in the Penguin SF line by James Pardey. But before reading the essay I recommend looking at some of the wonderful cover designs, for example We, Deathworld, Rork!, The Drowned World, Star Maker, The Evolution Man, Fifth Planet and Alternating Currents. They certainly don't make SF book jackets like they used to. All hundred plus covers can also be browsed alphabetically by author. [via The Guardian Books Blog]