Carbon Offsets - Have you tried it?

While finishing up the last of changes on my thesis, I had on the National Geographic channel's program called 6 Degrees.  The earth's temperature has already risen by .8 degrees celcius.  Eek!  So I decided to take a step to reduce my carbon footprint - I offset the carbon produced by our car.  While the Prius is great compared to other car types, we still produce almost 2 TONS (yes, TONS) of CO2 a year.  So I went to the carbon fund website and offset those 2 tons, taking care of the carbon produced by our car.  Offset - I donated towards projects that will take that 2 tons out of the atmosphere this year.  They have many different projects and you can specify what you'd like your money to go towards (renewable energy, energy efficiency or reforestation are the general categories).  Someday soon I'll offset the carbon produced by our "small apartment' living lifestyle...  but I should wait until I get paid again. Bah.