IZ Reloaded sez, "Inspired by the book, Penguin By Design: A Cover Story 1935-2005 dude searches local book stores and the internet for old Penguin books and posts some of the book covers on his Flickr set." Link (Thanks, IZ Reloaded!)
See also: Penguin Classics get new hipster covers
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.