Recently, I was checking whois for a 5-letter domain which had just expired. It was available, but seconds after I checked it with Godaddy's whois (checked the update timestamp), it was taken by Domains By Proxy, LLC (Godaddy's company). So for anyone checking this out, consider they may only do it with recently expired domains or short domains.
They may also turn off this code if this blows up in public.
They may also turn off this code if this blows up in public.