I regularly do a Google search for "Ofcom MCA maps", a rather specialist subject that takes you to the following page that's impossible to find on the website itself: http://www.ofcom.org.uk/static/radiolicensing/mcamaps/MCAs.h...

When I first searched on this, Google didn't suggest it at all, and the page itself was half-way down page 1. Now, it's up there at the top (even when logged-out). I can't imagine very many people search this term--so I can only assume my regular searches have pushed it into the search engine's consciousness.