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Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

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Re: Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

#201
post #91

Did you get a receipt by mail to your gmail, by any chance? Google analyzes receipts. When I still used gmail, it would automatically add flights to my calendar based exclusively on the receipt sent to my gmail account.

this is also why Amazon started dropping the item names in the email order confirmations

Re: Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

#202

Earlier quoted context omitted.

Many purchases are recurring consumables. Food, clothing, medicine, office supplies, car parts- none of it lasts forever. What does it cost to be reminded that you can buy more? Also, completely unrelatedly, if you saw some armchair internet rando claim they'd debunked a major and long-standing business strategy of market sector leader, how seriously would you take them?

Not sure if it fits with what the poster you replied to was saying but I find it a bit curious when I buy say a guitar on Amazon and my recommendations (emails or ads in other sites) over the next few days are still guitars. I do not remember seeing one of those promotions which follow a purchase being about accessories or add-ons.

I think guitars are like bicycles where the optimal number to have is n+1 where n = the number you currently own.

Re: Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

#203
March 2020, heydays of coronavirus paranoia. I came back home from somewhere, put my keys onto the dining table and went to the bathroom to clean up. My girlfriend, upon seeing the key-chain on the table started reproaching me for being careless about hygiene. When I returned from the bathroom I saw her washing the key-chain in the kitchen sink. This time I got angry and asked how come she hadn't thought that the usb memory-stick attached to the key-chain would be destroyed when being washed. I dried the keys along with the usb-stick, sat down at my table, opened up Facebook only to be greeted by an ad on top about water-proof usb memory sticks. I felt a chill ran down on my spine.

Re: Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

#204
post #172

Earlier quoted context omitted.

Yandex Ads network has a wonderful button - "I'm already bought this product" to stop ad spam on the things already at home )

Why would I want to give the ad networks additional information and make their advertising more efficient? Given they exist, I’m perfectly okay with advertisers wasting money on badly targeted ads.

Then again, could be fun to screw with them a bit. I wonder what would happen if you just kept clicking I already bought this on everything that pops up. Or better yet, just write a script that clicks it every time one of those ads appears. I wonder if it's possible to go through every single item they advertise and what would happen if you did.

Re: Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

#205
Not coincidence. Not "bank purchase history" shared with google- in most cases banks and credit cards don't know item level detail.

Lots of ways this data flow could happen, at least in the US. Happy to go through specific details I have seen if you want to share more about this, but two high level points

1. Remember that when you purchase something, the data about the purchase is BOTH yours AND the entity from whom you made the purchase. Most of those entities have data sharing agreements of various kinds for all sorts of legitimate business reasons

2. It isn't google who knows about the purchase, and even the advertiser doesn't "know" you made a purchase. Advertising is zillions of two sided marketplaces, with an enormous ecosystem of data packagers and conveyers and linkers, with lots of concern about recency and freshness of data. Your purchase landed some key about you in a bucket that was mixed and repackaged with many other keys that the advertiser knows as "keys recently interested in Voltaren." Some of those keys are related to people who bought it, or who searched for it, or more indirectly who lingered while reading a page with an ad for it...and in most cases are very short lived. So give it a few weeks and many of those buckets of keys will have been completely remade.

Re: Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

#206

Earlier quoted context omitted.

>Why? Not sure Maybe they are sick of surveillance capitalism and don't wish to be part of it? I'd do the same, but I really don't want a flip phone. Maybe once Pine Phone with GNU/Linux is working reasonably well, I'll switch to that.

https://calyxos.org/ and https://grapheneos.org/ both go part of the way. They're hardened, privacy-preserving Android flavors that work best on Google Pixel 3 - 5. CalyxOS emulates google services so you can use basically any Android app, while GrapheneOS goes further down the security hardening hole.

Huh didn't know about these, thank you! I'll look into them

Re: Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

#207

Earlier quoted context omitted.

Whenever places wantba phone number for ad and/or discount stuff, use: (Local area code) 867-5309 There's always an account, and it's a 100% gamble if this purchase you get something.

What’s the significance of this number?

It's Jenny's.

Re: Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

#208
post #29

Opt out of VISA marketing https://marketingreportoptout.visa.com/OPTOUT/request.do Second, disable GPS, and cellphone tower ID reporting (root needed.) So Google can't correlate you with sales records. At the moment, there is no way to disable Google AGPS spying on the stock Android. Third, block Google apps from reading your IMEI/IMSI/serial number, so they can't get AGPS data from your cellphone provider if it sell…

This is the dumbest ad strategy ever. Why on earth would ads about a product you just bought be effective marketing material. This is like how you get a million ads about dishwashers the day after you Google around and buy one. At least wait for a short duration of time to let the target run out of medicine before adversiting new stuff.

[deleted]

Re: Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

#209
post #140

Earlier quoted context omitted.

Gaslighting in the Information Age: You just imagined that ad started following you around.

Oh come on. It's a documented effect. It's the same thing as when you buy a new car you suddenly see the same or similar vehicles everywhere. Not every instance of someone providing an explanation for something you don't understand is "gaslighting."

Well someone doesn't enjoy a good joke. Especially one that's true

Re: Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?

#210
post #203

March 2020, heydays of coronavirus paranoia. I came back home from somewhere, put my keys onto the dining table and went to the bathroom to clean up. My girlfriend, upon seeing the key-chain on the table started reproaching me for being careless about hygiene. When I returned from the bathroom I saw her washing the key-chain in the kitchen sink. This time I got angry and asked how come she hadn't thought that the usb…

Unfortunately, though this is an excellent story, this is just an example of a bias known as "frequency illusion". It happens with a lot of things, like seeing the clock at 11:11 more than you do at 11:09. Or seeing lots of your make/model car but being blind to the hundred of other variants on the road.

How many times have you opened up your laptop and not seen a Facebook add for something you just did, or something you discussed? You'll never notice those occasions.

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