Seth Godin ignited a blog push for a good cause, to encourage people to use/try compact fluorescent light bulbs instead of the standard incandescent light bulbs most people use today. I won’t rehash the benefits beyond saying they save money, last longer, and use way less energy than standard light bulbs. Instead, I’ll just mention my quick personal story with them.
I first read about the benefits of CFLs a few years back, and bought a few to try them out. Basically, my wife and I hated the flourescent feel to the light, they flickered and took a second to light up, and they looked “funny” in lights where you could see the bulb. Those reasons led us I guess to make the unconscious decision to not purchase them again although we never really discussed it.
It’s now a few years later, and the impacts of energy use are a bit more real, so we took another look. The newer bulbs I bought have a light that rivals the normal bulbs, they turn on much faster, and the flickering is gone. They still look a bit funny, but that’s really just because we’re not used to them. I’ve now started using them in place of any old bulbs that go out so soon I imagine all our lights will be switched over. Additionally, I’m looking at LED lighting for the recessed lights I have in my house because CFLs don’t fit there and LED lights also have low energy usage.
If you want to participate in the blog push for CFLs, there’s also a Squidoo Lens to note you’re participating.
There are some difficulties though. How does one determine what the total page CPM should be? These weightings would have to be totally different per site because while an advertising heat map can generally hold true, I can tell you that the click and conversion rates vary widely from site to site. A 728×90 leaderboard at the top of one site should have a much different page share than a leaderboard on the top of another site. 
