So when we looked at sharing more info with you about why it makes sense all around to switch to CFLs, we didn't want it to become a lecture, like "Replacing a single incandescent bulb with a CFL will keep a half-ton of CO2 out of the atmosphere over the life of the bulb. If everyone in the U.S. used energy-efficient lighting, we could retire 90 average size power plants. Saving electricity reduces CO2 emissions, sulfur oxide and high-level nuclear waste."
Or, "Although initially more expensive, you save money in the long run because CFLs use 1/3 the electricity and last up to 10 times as long as incandescents. A single 18 watt CFL used in place of a 75 watt incandescent will save about 570 kWh over its lifetime. At 8 cents per kWh, that equates to a $45 savings."
So we'll stay away from the lecture and just point you in the direction of this really good resource page that tells you about the pros and cons of CFLs, including info about finding "warmer" versions that are less harsh...and there's even info about LEDs too. We definitely recommend you click over and read more!