It should go without saying that I've sanitized my e-reader.
Trying to inject advertising into the reading experience is sick and sacrilegious. A privacy sticker from N-O-D-E covers the logo on the back of my Kindle, while a piece of tape sanitizes the front. Between this and my offline, DRM-free method of using the device, I enjoy the Kindle without the corporate mindshare.
Currently reading Bleeding Edge by Thomas Pynchon.