This has to be one of the worst ideas for a consumer gadget ever. At first you can kind of see why they made it. A portable device that connects exclusively to Twitter makes sense, right? But think about it for two seconds, and it's clear why it failed. In major markets like the US, Tweeting via SMS is almost universally possible. Even in Australia, it's possible through the Telstra network. With 10 year old feature phones. Add in the fact that the device was slow and horrible to use, and you have a ripe recipe for failure.