[skimoose]

Well if you're using it as a heater, the wasted input energy is coming off as light. So if you're using more bulbs just to get heat you are wasting energy in the form of unnecessary light. Before I relied on the added heating of incandescent bulbs I'd improve the heat loss efficiency of my building.

Remember that the average human being generates as much heat as a 100W incandescent bulb. So why not just invite the rest of the family into the room for the added heating load, and save some electricity.

Also, unfortunately thanks to deregulation low cost electricity is disappearing. Why should I sell my watts to you for $0.08/kwhr, when I can can reach customers through the grid willing to buy at $0.11/kwhr or more. But that is entirely a different story.