Not everyone has a 4GB USB key or SD card just lying around, which was required to run Hexxeh's first build of Chromium OS, and we'd say that 8GB keys are exponentially more rare, which is what Dell requires with its build of the Chrome OS open source variant. Well, you can cancel that Fry's run, because Hexxeh is back with a Chrome OS Diet flavor, which cuts the fat and gets the OS onto a 1GB drive. It supposedly doesn't cut anything features-wise, and actually improves WiFi support since it's based on a newer build -- check out that compatibility list source link for the full story on that.
