I've been visited by someone who was referred by this domain. I don't know what it means. I wrote about it on my blog in slightly more detail. Google yielded no result. I think this is pretty mysterious...
i think your pretty safe in your assumption that it's a tool they use when reviewing news sites.... /gnews/ and the fact that you had recently submitted to g news.
I agree. But I pose this question: why would I get the referrals *after* the site was rejected? We'll probably never know. My friend who works at google isn't allowed to say what she does for her job (which means she isn't very high up).