Yes you know Google is watching you, but where and how?
There’s Google Ads, and Google commerce features, including to push you ads on the e-commerce website you came but didn’t buy anything. I see that each and everyday with ssense.ca (and sometimes open it on another tab, just for the fun!). But there are two weapons to follow you, know your point of interest and then finally get you caught on the Google spider web.
First is Google Analytics, too easy, efficient, a great tool. I use it too, and plan to remove it from there when I will talk about security and go full https (TLS naturally dudes!). It not only see which URL you are looking for, but it also have access to which content you actually watch, oups!
Secondly it’s the marvellous Google Fonts, it’s prfect for any web site, and at first you could easily download the fonts and use them. Now it’s an hidden choice, with a clear natural choice to link to Google website instead, making it a first-choice to have great web fonts in your website. with a hint, each time someone is looking at it, Google knows what page page the user is looking, it’s another interesting way to spy what your are looking for…
So my point is, I have to remove Google Analytics and checks Web Fonts are downloaded from this site, to be sure everything is clear from spying from Google, and thus from any agency that have legal and direct access to Google’s data.