A 10-inch slate tablet seemed imminent when news broke that Dell had an iPad rival on the way, but that turned out not to be the case. The 5-inch Dell Streak was their first attempt, but ended up being more smartphone than tablet. Its second attempt—the Dell Inspiron Duo ($549.99 direct)—isn't even close. Although it is a novel take on a netbook convertible tablet, it's anything but an iPad rival. It features a cleverly designed flip hinge that exposes (and conceals) a physical keyboard, and is one of the few netbook tablets that run on an Intel Atom processor and a full blown Windows 7 operating system. Although it sports one of the most innovative designs we've seen in a while, the Inspiron Duo is no threat as a touch device to any tablet and completely misses as a netbook.