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I don't know whether or not facebook is doing this, but it is worth knowing that supermarket purchase data is often merged with online profiles. For example, my
by trotsky 14y ago
I don't know whether or not facebook is doing this, but it is worth knowing that supermarket purchase data is often merged with online profiles. For example, my ISP (Verizon FIOS) buys this data, merges it with subscription information and household data and then "shares" it with their internet advertising service bureau, who happens to be google. They don't need 3rd party cookies in these scenarios because they can match ip to subscriber name & address.
I don't believe there are feeds that are real time enough to support next day purchase correlation, but there certainly will be in the future.
Note that even if you've given them bad or no data when you obtained the affinity card they still match you with your credit cards that you've used at the grocery.
- tomkinstinch 14y agoIs there a way to opt-out of this without paying cash for everything (and avoiding "store discount" cards)?
- mgkimsal 14y agodon't tie a store discount card to your real name/email/phone numbers?
- daxelrod 14y agoTarget ties purchases to your credit card, without needing a store discount card. http://www.nytimes.com/2012/02/19/magazine/shopping-habits.html?pagewanted=1&_r=2&hp& http://www.nytimes.com/2012/02/19/magazine/shopping-habits.h...;
- mgkimsal 14y agoyeah, if you want to do that. and I do - we get 5% off everything.
- trotsky 14y agoI think switching where you shop is probably the most practical - it's rare for independent groceries to have such a program, and the smaller the chain the less likely they are to be selling shopping data on. Under a certain volume it's apparently not appealing to bother doing the deals to buy it.