If you look at the WWF's current campaigns, they include stopping prairie dog poisoning, saving whales, stopping an oil drilling effort and, of course, the ubiquitous global warming. Nothing at all about mounds of poisonous slag leaching toxic heavy metals into the soil and ground water in China.
I will say this for the WWF, they definitely have a positive voice on their site. They eschew the heavy handed lecturing so common in the green movement and instead focus on positive education and stories of success. It's a pleasant site and encourages participation.
Still, you'd think that the ecological annihilation of vast swaths of land would raise some red flags, wouldn't you?