Krista emailed me why she left. It was basically her continual complaint that she never felt that welcome by certain folks (I'm not mentioning names and I'd prefer that other people didn't either) after her decision to go back to meat eating some time ago.
Personally I think people just need to take a break sometimes. You know, walk the dog...go camping...relax. Realize there's more to life than a seventeen inch computer screan. It's helpful and healthy. I've taken numorous breaks from this place myself. Then it's always nice to come back and reacquaint myself.