Here's something on sustainable agriculture: Farmfoody.org seeks to connect those who eat food with farms and gardens. Do you eat food? If so, this might be of interest to you.
The site showcases a featured farm, links to an Eat Well Guide, provides a forum for local growers and buyers to interact and arrange meetings, offers recipes, and allows farmers to tag members with foods that they grow and members to tag farmers with foods that they want.
Their premise follows from these basic definitions:
Farm - a farm, vineyard, PYO, Farmer's Market, CSA, a victory garden -- a local producer. All farms want foodies as friends
and...
Foody - a customer, chef, everyone with a relationship to a farm and who wants to make friends with a farm or another foody. Once friendship is made, a foody receives bulletins that their farm friends post.
It started as a mid-Atlantic venture (one of the founders is from Hollins Farm in Delaplane, Virginia, where it's currently strawberry season). Since the network now has over 750 members, though, I presume it has expanded beyond those confines (or soon will).
In addition to the website itself, you can also read more here.

Trying to find your way around this place? Like most expositions, we offer a map: 


Having problems commenting? (UPDATED)