This Google ranking method is fairly well-known, BTW. Long before idiots like these were taking advantage of it, people had already begun spamming the Google rankings by creating a bunch of fake pages that all point to one main page, such that anyone searching for, say, "flowers" - as a made-up example - would automatically receive "Joe's Online Flowers" as the number-one result. When it works as intended, it's actually a pretty good way of ranking, but it's also prone to people intentionally exploiting it, obviously.
LOL, the possibilities are endless. I'll have to give this a couple of hours thought.