We're sure some Linux fans broke into a cold sweat over the open source Spark tab. Fortunately it's taken the next step towards their eager paws: the seven inch slab is now up for pre-order. Sign up for one and you'll net a priority order code to ensure you get one of the first units off the production line, alongside 500 points to use at the manufacturer's add-on store. The site still expects to launch the Spark for around €200 ($262), which is a fair chunk of change less than those top-drawer tablets -- and what price can y
