Out of the blue I recieved an invitation to join the Wildlife Gardeners forums. The forum's emphasis is on (of course) wildlife, but also organic and native gardeneing. There is even a section on permaculture, and another on nature photography!
There isn't much traffic there yet, but it has great potential. And it beats the pants off of the previous gardening forums I had spent some time in. The biggest difference? The folks at Wildlife Gardeners actually do research. What a nice change from old-lady gardening, where you get wonderful assumptions such as "it grew in my yard, so it must be native!"
For giggles, I drew up a diagram of how to braid onions to share in their "Preserving the Harvest" section.