Facebook has launched a pilot scheme selling strangers access to users' inboxes.
The social networking website has introduced a fee, believed to be $1, to guarantee that messages are routed to a recipient's 'inbox' and not their 'other' folder, where they are likely to be ignored.
Facebook has billed it as giving users the chance to hear from people they do not know but who have an 'important' message for them. It argues the fee will actually cut down on the amount of unwanted messages. But the trial, which began yesterday, has sparked fears that businesses will be happy to pay such a low charge and bombard people's inboxes with advertising.
Facebook previously only allowed messages into an inbox if the recipient was 'friends' with the sender. It also uses algorithm calculations to let 'relevant' messages through, such as those sent from a 'friend of a friend'.