Its amazing how vague an "invention" can be in a patent application.
How can they insert links into our pages without one of:
1) our installation of support on the site, or,
2) the telco doing it (but some ISPs do this already, so no change there),
3) client side support (a sort of anti-ad blocker, adding info instead of removing it).
It looks to me that they are patenting automatically inserting related links using search engine indices. Not really a new idea given that many sites already automatically generate related links within the site, this just adds related links to other sites as well.
It looks like it is most likely to be used where people use Google as a reader (e.g. Google Groups, the PDF reader) or incorporated into Chrome or Android.
how many of those visitors don't even have a clue
That is their own fault. The press has covered it, browsers can block it, Google let you view what they track when signed in. Most people do not care about their privacy, and will not until something goes badly wrong, either to themselves or someone high profile.