That screenshot was most definitely taken with Google as the HTTP referer. (I'm too lazy to cut-and-paste the URL from the search page into the browser, I just

That screenshot was most definitely taken with Google as the HTTP referer. (I'm too lazy to cut-and-paste the URL from the search page into the browser, I just clicked the link.) Clicking the link again shows the additional content at the bottom of the page as you described. So there's some other algorithm at play.