> but at the end of the day, Google and FB are advertising companies trying to be more than that.
Looked at Netflix clicked on a movie that I though may be interesting, it was overdubbed in English since it was a Korean movie. I watched maybe 5 minutes of it then exited. Go to YouTube and suddenly Korean videos are being suggested.
At a car dealership with my sister she asked me to be there for support when she leased a car. At home same day hours later YouTube again it is plastered with "how to buy a car" videos. I hadn't been looking for a car, never searched for anything like that in the previous days ever.
You could do a test. Get someone to take your (locked) smartphone into a well-known dealership for something you aren't ordinarily interested in. Blind test, you don't know where they took the phone. Google tracks the physical location of your phone (don't know if it's possible to completely opt out of that)... trivial to match that to "dealership X" given that Google Maps already knows about those. If in the blind test you can tell your friend where they took the phone based on increased ad activity, then there's proof.
A day after I started using an Android device: I cycled to work, and my phone gives an alert and asks me to rate X. WTF? Oh right, I cycled by X on the way. I immediately turned off what I could; no more popups like that but do I really think Google doesn't track my location any more?
I've had my professional-subscription Wall Street Journal app run a full page ad for frozen jamaican hot beef patties (so good...) that I bought a box of at costco earlier that morning. Pretty amusing, just given how off-brand that is for ads that run on WSJ.
Went to a doctor over issues with my feet. Got spammed with ads covering various health issues. Patient data tends to be protected in most countries, no one should have access to when I visit what doctor and I find it insane that Google gets away with using that protected information to sell ads.
Fair guess would be that you leaked that information somewhere along the way - putting the address into google maps, pulling up the dr office phone number on google proper etc.
I have an Android phone, so I wasn't surprised that Googles spyware managed to get that information, I was surprised that they are allowed to collect and use medical information about me without ending on the wrong end of various related data protection laws.
There are no healthcare privacy laws the the USA that apply to Google. Indeed, "medical information" is not generally protected. HIPAA only prevents "healthcare providers and healthcare businesses" from providing that information without your consent. If you disclose or leak medical information to other companies, they are not required to maintain confidentiality and can sell or use that information perfectly legally.
Looked at Netflix clicked on a movie that I though may be interesting, it was overdubbed in English since it was a Korean movie. I watched maybe 5 minutes of it then exited. Go to YouTube and suddenly Korean videos are being suggested.
At a car dealership with my sister she asked me to be there for support when she leased a car. At home same day hours later YouTube again it is plastered with "how to buy a car" videos. I hadn't been looking for a car, never searched for anything like that in the previous days ever.