It's a temporary thing until we all get cases which act as 'Smart Covers'.. Honestly, the Smart Covers are cool, but they don't protect ANYTHING, and over time, they begin to show wear and tear.. mine is starting to darken around the edges (i'm assuming from the oil in my skin, and from contact in general), not to mention the hinge shaving issue where it's leaving dark what I perceive to be metal dust from the hinges on the side of my iPad.. it's easy enough to just wipe off, but it's still a nuisance..
the Smart Cover is smart... but it's going back as soon as my Yoobao gets here.. hell, I may not even want the money back.. I may just exchange it for the Camera Connection Kit, or the HDMI Kit.. who knows..
I don't know what's different about mine but I've had my smart cover on since launch day (19 days now) and haven't had any metal dust from hinge shaving or marks on my ipad. I just checked again and there's none. I never remove the cover, its always magnetically attached so maybe that has something to do with it.