On 21 September, MailOnline ran this headline and story:
'Nobody has seen a creature quite like this one before.'
Not so. Just over half an hour after the first comment was left on the article, Jamie from Wisbech pointed out it was a cuscus.
There then followed dozens more comments identifying the 'mystery creature' as a common spotted cuscus.
How did they manage that, given 'nobody has seen a creature quite like this one before'?
(From Darryl Mason)