Don't think it's there for money - search Google for "reddit" or "ycombinator news" and you'll see that the most obvious site result for those terms is put in a

Don't think it's there for money - search Google for "reddit" or "ycombinator news" and you'll see that the most obvious site result for those terms is put in a <link rel="prefetch" ...>. It doesn't seem to appear for things that don't have an obvious site. I bet it's in there just to "speed up" browsing, especially for people who use Google search as their address bar.