Great comments here, and interesting article. If anyone is interested, here is a book on LED lighting: http://www.amazon.com/LED-Lighting-Primer-Future/dp/14493

Great comments here, and interesting article. If anyone is interested, here is a book on LED lighting: http://www.amazon.com/LED-Lighting-Primer-Future/dp/1449334768 http://www.amazon.com/LED-Lighting-Primer-Future/dp/14493347... covers all the basics - CFL lifespan, lumen depreciation, etc.