An independent restaurant in the Pontcanna area of Cardiff has been criticised for sharing the personal details of a potential customer on Twitter.
The restaurant Bully's said the customer did not show up after making a reservation.
It has since removed the Tweet, which included the customer's name, email address and phone number.
Emily Quinlan, from Merthyr Tydfil, said that her details were shared with Bully's 9,000 followers.
Bully's has now apologised for the Tweet, saying it was "fuelled by emotion", but public opinion is still divided.
Bully's owner, Russell Bullimore, says the restaurant loses about 12 people a week who book, which is around £40 per person. He says this can add up to £50,000 a year.