I don't really understand how those connections among websites work. I've sometimes noticed that when I Google for information on a particular subject, some of the hits will be not actual articles about the subject but pages from a site where such articles might be, with my query already entered into their search function. That seems legitimate, though I'd rather see links to the actual articles. Some of the search results turn out to go to discussion forums where the replies say mostly, "I haven't a clue about that, either."

In addition to regular Google hits, the results page I get will usually have "sponsored links" and other ads at the top, bottom, and side(s). Some of these ads clearly don't have a clue about whatever I was searching for but want to attract me to their site anyway. I noticed a few years ago that even if I Googled on something undesirable, let's say "creeping crud" (whatever that may be), I'd get a few ads that said, "We have creeping crud for you!"

On my other computer I use a dialup connection to a provider located in "Smalltown", maybe 50 miles from here. The ads I get (on Yahoo, for instance) often show me pictures of attractive women located near Smalltown who allegedly want to meet me ("click on your age range...") On this computer I use a cable connection to a provider located in "Bigcity". The ads I get on Yahoo feature stuff in or near Bigcity that I might conceivably be interested in.