It's common knowledge that the Microsoft Kin family of handsets suffered from a short life and quick death, with the hardware only being available for a matter of weeks. The poor devices never really saw the light of day when Microsoft's somewhat 'hip' mobile phones launched back in 2010.
Issues ranged from the hardware being too expensive to having too few apps and being slow and sluggish. Internal videos have now been published that show focus groups testing the Kin (using pre-production units that reportedly changed very little from the shipping product). It doesn't look good at all for the ill-fated devices.