Plain brown wrapper

Both SM and I got Kindles for Christmas. The potential of e-readers seems pretty huge, especially the privacy of no one knowing what you're reading -- which immediately made me wonder when porn is going to hit Kindle.

It seems to me that this would be the ultimate plain brown wrapper for folks who want to peruse their fave magazines incognito. The technology for a color screen is already there. Many magazines and newspapers already offer e-reader subscriptions. Porn seems to be a logical next step. Subscription to Hustler, anyone?

Or perhaps I'm naive and porn has already made it to the little screen?