Interesting. I just registered 4 of them and none of them are showing up in my account. I called GoDaddy and they literally told me they have no idea what's going on. Apparently, their backend is throwing a code no one has ever seen before. These domains are pretty awesome so hopefully they get this resolved.
gobaddy sucks, find another registrar > enom > dynadot > namecheap
hydroponics.guide is good for development