4 ms·
Thing is, OP mentions using two different browsers, which is why it's surprising. I guess there's still the possibility that a cookie was added months before t
by oelmekki 9y ago
Thing is, OP mentions using two different browsers, which is why it's surprising.
I guess there's still the possibility that a cookie was added months before that and that "tainted" browsing was forgotten. But it's still worth wondering if some other identification mechanism could be at play.
- theweirdone 9y agoOr, facebook(https://www.facebook.com/business/learn/facebook-ads-reach-existing-customers https://www.facebook.com/business/learn/facebook-ads-reach-e...) matches this cookie to your fb account in their system. Then making this information available across the browsers is trivial. Now, to actually think of implementation, I can't even imagine the amount of data they need to store(and clear in LRU manner) to make this work.
- saluki 9y agoI'm sure they are tracking/matching by cookies, ip, FB logins, geolocation, etc . . . by combining those it's pretty easy to serve up the right ad, most of the time.