Anent the WindSave turbine, yet another similar product has appeared: the Renewable Devices Swift. It’s Scottish too, and again there are few details. The Scotsman has the story.
Someone commented here that one could build such a device cheaply from parts from any DIY store. This isn’t quite the case. Properly formed blade sets are not trivial to make, and while you could build your own generator, weatherproofing it and making it CE-compliant would be hard.
We miss you Stewart!