Have I mentioned The Campaign lately?
I haven't? Do check them out -- it's a Grassroots Political Action campaign working toward the mandatory labeling of GMOs, the regulation of PharmCrops, and saving organic food from GMOs. There are handy-dandy Action Alerts, and you can sign up to have them emailed to you as well. Definitely worth checking out.
Another very interesting site is The New Farm, which offers "farmer-to-farmer know-how from the Rodale Institute." They have such helpful things as The New Farm Organic Price Index, which tells you how much of a surplus you could/should be charging for organic crops, forums, etc. If you're an organic farmer (or want to be, someday), this site could be very useful.