Shortly after its release, I explained why the .WWF file format isn’t a really green and smart idea. Here I answer, with an invite to all environmentalists and green activists, to a critique from Marghe, a reader who got upset because (synthesizing): the message that WWF wants to send is just "don't print without a real reason!" The format is just an excuse, it's the message that counts. However, I find your critique isn't constructive, it seems you're just advertising free (as in freedom) software, but while WWF created a file format to try to do something, you wrote an article that is just useless (and it's bad that it appears as one of the first hits in Italian Google searches).