5 ms·

I could see it working like that. However, the best way to figure out is to just test it. Talk about something random and see if those ads popup on your feed. I

• lm28469 8y ago
  I think people underestimate the number of data points fb/google has access to. Many of these examples can be explained by other things. Receiving baby items ads while no one knows your wife is pregnant ? Well maybe she googled a brand of baby strollers and fb used its graph + the fact that you're at the same location everyday after work to determine you're her husband. Receiving ads for a small music band you only heard at that open mic night you randomly joined 3 days ago ? There probably was an event on fb with the list of bands that played that night + logged in the bar wifi. With the number of people in the "hacker" community who want to prove fb and google are bad we'd already have real technical proof of it happening. Either they send the data back to a server and process it there, or process it on the device directly, both of which should be fairly easy to detect.