In 2018, Facebook knows I’ve clicked on 17 ads since late January for adult-looking work wear, because I can’t wear flannels and pants to work forever. In the Facebook settings for your account — right below the link to deactivate it — there’s an option to download a copy of all your Facebook data. Users can turn this permission off at any time, and Facebook said it doesn’t sell that information to third parties. There’s a ton of other information in the downloadable data, including every Facebook message you’ve ever sent or received, your entire Facebook timeline and a list of third-party advertisers who have your contact information. According to Facebook, that download might also include the “unique number” Facebook assigns to you for facial recognition purposes, based on the photos you’ve been tagged in on the site.

Source: Washington Post March 27, 2018 16:27 UTC