For and against "blackle.com". Plant a tree

After spending couple of hours, reading if blackle.com saves energy compared to google.com i learnt that:
- consumption of electrical energy depends on the monitor type. Today about 75% of the monitors in use are LCD/TFT and only 25% CRT.
- LCD/TFT monitors (30-65W) are significantly more energy efficient compared to CRT monitors(150W);
- LCD/TFT monintors actually consume slightly more power when showing a black screen vs white.
The TFT screen is a sheet of plastic (TFT-sheet) made of small squares (pixels) that change color when a certain voltage is applied. Behind this TFT-sheet, there is a white neon-lamp that shine through the TFT-sheet. This way, a colored pixel on the TFT-sheet becomes lit up by the neon-lamp. So, if a TFT-sheet is unpowered, the pixels are transperant, and thus letting all the light through. When you power all the pixels on the TFT-sheet at full-power, they will become black, and the light doesn't shine through, which is the reason a TFT screen, showing a black screen, is consuming more power then one showing a white one, although the difference is almost negligible. *
- CRT monitors indeed consume approx 25% less energy when showing black screens vs white ones.
- Blackle is not part of google and does not contain the entire functionality of google (advanced search, metric conversions and calculator, links to gmail, picasa, groups and all other extras). The results of the search engine of blackle are not identical to google results - some of the paid adds in blackle are shown as results, which changes the ranking. e.g. google search results for the word "monitor" in Bulgarian list in the first top 10 the web site for blind people http://bezmonitor.com/, while blackle results are more commercially oriented sites....
- Google has a commitment to green . I do not find information for blackle and the like to have such commitments.

Conculsions:
1) If you are still using CRT monitor, www.blackle.com and the like will reduce insignificantly the energy you use. But to measure the big picture you have to consider blackle is slower, which would counter balance the effect of energy savings on your montor with the energy spent on the server. ..It is worth giving a thought to replace your monitor, if that is not viable as of yet...turning down the its brightness would be the easiest way to reduce energy (that applies also to LCD users)
2) The probability of finding what you are searching for with google is much higher, which in combination to google energy saving activities - such as usage of solar power and energy saving servers - activities that certainly are measuarable. makes me go back to using www.google.com (which was not my intention when I started writing this post)
3) For the time I spent to read the info and write this post , I could have planted at least one tree. I leave that task for this Spring and set a goal before February 15, 2008 to have a detailed plan where and what trees I need to plant in the garden
*source: http://blog.saxgod.be/index.php?blogid=1&query=shine