Well, it turns out that there’s nothing wrong with their proofreader. That’s a legitimate domain. You can browse to http://www.organicvalley.coop and read about the people who make my milk. It’s not a fluke domain, either, because there’s a link on there to http://www.farmers.coop.
I checked GoDaddy, and they don’t seem to have a way to register a .coop domain. Where does such a thing come from? It seems so obscure; I wonder how .coop managed to get approved, considering all the other TLDs have been rejected.
More importantly, how do I register chicken.coop?!
Update: Organizations can purchase .coop domains at http://www.nic.coop. Individuals are not eligible to purchase .coop domains. It appears that someone is squatting (the mind reels with puns) on http://www.chicken.coop. Darn the luck; it’d be worth forming an organization around that domain name.