The power factor of CFLs is around 50% which means that from an environmental point of view, they take twice the power that it says on the box. Just because it doesn't register on your personal wattmeter doesn't mean it doesn't exist. I think that is important in this discussion. I can see why the promoters of these lights don't want to talk about power factor, but I would have thought that there were some engineers on this forum who wouldn't let it pass so easily.

Biofuels have always been economically viable. The question has always been economically viable to who?

The guy in the video makes it sound like you would get the same "full spectrum" as you get from the sun. The problem is that the sun is on the other side of a huge filter called the atmosphere, and this lamp is on the same side as us. I don't think that his comparison is valid.
    I wonder too about the UV output, something which is rarely talked about. High UV can be very good or very bad, depending on the application.