The Kindle Fire is less a tablet and more a $200 window into Amazon's storefront. The 7-inch slate that shares its DNA with the BlackBerry PlayBook lacks any physical features bar a micro-USB port, headphone jack and speaker. Internally, that 1GHz CPU is paired up with 512MB of RAM and 8GB storage, with no option for increased size, Bluetooth, 5GHz WiFi or 3G. Performance was fine inside the company's carousel sandbox, but step outside and things became outrageously herky-jerky, especially in the Si
