Google's Deep Search

We tend to think of Google as an engine that finds matches for concepts, since that's how we frame our searches. But in fact, it's simply matching patterns - just try typing a few random characters into the Google box and searching for them: you'll be amazed what can turn up.

As this article indicates, those patterns could just as easily be binary sequences that go to make up executable files - which are simply a pattern with a different kind of "meaning". This seems to indicate that Google is not just indexing the manifest content of the Web, but the entire - and much larger - binary universe that is accessible in some way online.