Reporter discovers Facebook keeps a permanent record of friends that users delete, and many advertisers he had not interacted with had his contact information
When I downloaded a copy of my Facebook data last week, I didn't expect to see much. My profile is sparse, I rarely post anything on the site, and I seldom click on ads.
Context & Ripple Effects
The reporter's archive dump lands two weeks after Facebook began investigating reports that Download Your Information archives contained videos users never posted — a pattern of the export tool surfacing more than users expect. It also extends ProPublica's earlier finding that Facebook buys detailed broker data about users' offline lives without disclosing it, since contact lists uploaded by advertisers are another channel where collection outruns disclosure.
First-order effects
- Users who request their own data now see concrete evidence that deleting a friend does not remove the record of that friendship from Facebook's systems.
- Advertisers the reporter never engaged had his contact information, exposing how widely contact-list uploads match users without any visible interaction.
Second-order effects
- The gap between what Facebook collects and what its tools show gets documented from both sides: Privacy International later finds the Download Your Information tool returns an incomplete and inconsistent list of advertisers, while BuzzFeed finds the advertiser-transparency tool effectively unusable for normal people (a nightmare to use).
Third-order effects
- If deletion leaves permanent traces and export tools understate advertiser access, user-facing transparency becomes an accountability surface regulators and journalists audit directly — pushing erasure and portability from policy abstractions into testable claims against a platform's own exports.
The trend: Platform data practices are increasingly audited through users' own export files, with transparency tools chronically lagging what platforms actually collect.