Do compact fluorescent light bulbs really save you money?

Do compact fluorescent light bulbs really save you money?

It's true that the CFL bulbs cost more than incandescent bulbs, but they also last longer (typically 5yrs.) and are supposed to save you enough money to recover that cost. I wanted to find out if that was true. So I switched the three 60W incandescent bulbs in the floor lamp with 13W CFL bulbs and I switched the 3-way bulb with a 26W CFL. FYI: a 13W CFL is the equivalent to a 60W incandescent. Same goes for the 26W CFL and 100W incandescent.
The results of an hour long Kill-A-Watt test showed that the same floor lamp with CFL bulbs costs $0.00 per hour, $0.11 per day, $0.78 per week, $3.34 per month and $40.71 per year. Big difference from the $205.00 per year that the same lamp with incandescent bulbs would cost! Yes, I know those prices are for running the lamp 24/7, but if you think about all the time you have lights on in your house, you'll soon realize how much money you could be saving if you decide to switch to CFL bulbs.