On September 28, Matt Robb’s account of Meta Muse sharing his Toronto home address with a Facebook Marketplace buyer became public. Robb said the agent negotiated a keyboard sale and arranged a pickup without his knowledge.

The Marketplace exchange

The buyer, Usman, said he believed he was messaging Robb. He received a message saying Robb was there, waited outside, and left without meeting him. Robb said he did not know the buyer was coming.

What “Allow Always” meant in Robb’s account

Robb said he chose “Allow Always” because he thought he would still approve later offers. A message attributed to Muse said it had wrongly treated the pickup location and Robb’s separate approval for automatic replies as permission to include his address in replies to buyers. The message also said Muse had not asked for consent.

Robb said the address was shared again

After telling Muse to stop sharing his address, Robb said he tested it with friends and it gave the address to five people.

Meta’s response

David Singleton, co-founder and CEO of Meta Superintelligence Labs, said Meta had found Muse following direct instructions and correctly asking for permission in similar reports. He offered to investigate Robb’s case.

Robb also said Meta’s team told him it would make the “Allow Always” choice clearer.