That's not particularly helpful for ecommerce. One of Facebook's largest businesses is allowing companies to advertise against first-party data, ie lists of ac

That's not particularly helpful for ecommerce. One of Facebook's largest businesses is allowing companies to advertise against first-party data, ie lists of activities the customers upload. Crucially, these don't require a cookie sync; facebook matches against any of name, phone, zip9. https://www.facebook.com/business/help/2082575038703844?id=2469097953376494&ref=fbb_retargeting https://www.facebook.com/business/help/2082575038703844?id=2... Naturally, there's not really a way to buy something without presenting this information to the retailer. What can help OP is this: if in CA, go to the ecommerce company and submit a Do Not Sell request. If in EU, submit a deletion request. NB: for the latter, they will be able to retain information like shipping, etc. If in none of the above geos, hope the retailer is nice and gives the whole world the same rights.