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

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221–230 of 494 posts

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

#221

Did you search for "pain" or "arthritis" or "migraine" or something like that? Visit a page devoted to your condition or symptoms? Could be whatever led you to get Voltaren in the first place also led you to issue search queries or visit sites in a way that let Google infer you might be interested in Voltaren.

Or even just search the pharmacy website to see if that branch had it in stock?

I would think something like this would be the most likely culprit.

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

#222
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…

Visa doesn’t build audiences for item-level data. I used to build these audiences at oracle (there are other posts in my history about visa audiences).

Geolocation is not very accurate from gps, so unless the store was off in a field by itself that’s not what happened here.

The only real way to avoid this happening would be to use a new credit card for each purchase, with a fake name/billing address.

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

#223
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.

Along with what others have said, the system isn’t perfect and some marketers aren’t great at their job. It’s easy for recently purchased data to get mixed in with just about to purchase data. It’s easy to forget to exclude an audience of people who just bought, etc.

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

#224
post #159

Tangentially related, for the first time ever I saw Gmail losing its anti-spam game. We were doing some home-modeling and we went to Home Depot sometime early this month. And... some entity somehow discovered this. And then all of a sudden I started getting spam emails related to Home Depot's/home rebuilding. The spam emails successfully pass through gmail's filter because they seem to emanate from aol,gmail,hotmail,…

Ebay sends me spam emails every day. Technically I guess it doesn't count as spam because they originate from ebay.com and I "consented" by signing up an account with them, but to me they're every bit as annoying and toxic as bona-fide spam.

They have to give you an option to turn it off usual a link at the bottom of the mail. However, never click on such a link from a real spam mail as that would tell them your email is read and you get more spam.

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

#225
post #159

Tangentially related, for the first time ever I saw Gmail losing its anti-spam game. We were doing some home-modeling and we went to Home Depot sometime early this month. And... some entity somehow discovered this. And then all of a sudden I started getting spam emails related to Home Depot's/home rebuilding. The spam emails successfully pass through gmail's filter because they seem to emanate from aol,gmail,hotmail,…

Google used to show personalized ads based on your emails but that process is supposedly stopped. Now Google reads your emails still to filter out spam and sort it into its default folders for promotions etc. Also I guarantee I went directly to a website for a product, a vitamin, which I never searched for and purchased it and then received ads for the exact product and brand I purchased for the next week on Google s…

It's ironic that you provide a Google AMP link. Try without: https://variety.com/2017/digital/news/google-gmail-ads-email...

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

#226

Earlier quoted context omitted.

Well I've had it happen with toilet seats. In 40 years on this planet I've only ever needed to purchase that one. I'd imagine if I needed to get more than one that I would get them all at the same time.

There's probably a nontrivial number of people who renovate houses one bathroom at a time.

I'm sure there are. I'm also sure, having been around house flippers (my brother flipped for a while, my MIL flipped for a while) and reno (my parents, my MIL, and my wife when we were dating) a few times in my life, that they don't buy them through Amazon/online.

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

#227
post #11

I have no sources at all, but my memory tells me that I've read that Visa, Mastercard and similar sell "anonymous" transaction info and that Google is their customer. I've been living under the assumption that Google could de-anonymize practically all that transaction info when they match it up to all their other info they track us with. Maybe I'm wrong?

Visa’s audiences are merchant level, spend/frequency level. Ie “users in the top 10% of spenders at jewelry stores”. “Users who’ve bought train tickets in the past month”.

Visa has very strict rules about audience size, and all the audiences are modeled. (Your criteria can’t target something like less than 20k users, and then they model that up to a few million users).

In this case either the store, the pos/crm, or bank used his purchase data.

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

#228

The surveillance economy is too profitable for this to change any time soon. Walmart is rolling out facial recognition across all their stores. Doesn’t matter if you pay cash. Pay with a card once and you’re identified. I consulted for Axciom and the best way to avoid their reach is to move to a country with good privacy laws or to a country that’s too poor for these big companies to care about.

Target has had facial recognition for the better part of the last decade. Not sure if they've integrated with their non-security oriented systems, but I'd be surprised if they hadn't.

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

#229
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…

Purchased a hard kombucha at Whole Foods last week,

Ever since, about 1/3 of my instagram ads are for it. Never had an instagram ad for it before.

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

#230
post #95

Earlier quoted context omitted.

In Germany (and probably all of Europe), it is forbidden by law.

I get the impression it's not forbidden in the UK. Here's the equivalent page from MasterCard. [0] (Incidentally, the captcha is broken so the page is unusable.) [0] https://www.mastercard.co.uk/en-gb/vision/terms-of-use/commi...

> To opt-out from our anonymisation of your personal information to perform data analyses

The page is super vague, and the question remains if they can fully anonymise the data, but if they can, it's allowed. Personal data is covered under the GDPR, while anonymous data isn't [0].

[0] https://ico.org.uk/for-organisations/guide-to-data-protectio...

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