Now I agree Namenut and Yofie, I believe .org #2 it is authoritative, but let me go to the flipside. Most of the people investing in .org are not going to start a green site to save the planet, they are looking to sell the .org for a profit. Do you think there will be a backlash from non domainers. Meaing if you had GreenPlanet.org, excellent name IMO and you wanted $20,000 do you think people would be like, what a disgrace this name should be in the hands of an org dedicated to a green project.
Now again I am not against selling it and I agree there is the trust, but would the trust be there if a lot of uneducated non domainers think this is in bad taste and it is not right to sell a .org for big money to a organization that will use it for the good of the planet?
I like .org for financial names like Loan and Mortgage. I own some Igeo.org that get 1 or 2 uniques a day like Imontreal.org or Iportugal.org and my main niche tv, I have gratistv.org, hongkongtv.org,britishtv.org etc... all get traffic with Gratis getting like 4 a day which is not big but interesting for a tv.org IMO.