An American man has been sued by an island resort in Thailand over a negative Tripadvisor review, authorities have revealed.
He could face up to two years in prison if found guilty.
Domestic tourism is still happening in Thailand, where coronavirus numbers are relatively low.
Koh Chang island, famed for its sandy beaches and turquoise waters, is home to the Sea View Resort.
But a recent visit to the hotel landed Wesley Barnes in trouble after he wrote unflattering online reviews about his holiday.
"The Sea View Resort owner filed a complaint that the defendant had posted unfair reviews on his hotel on the Tripadvisor website," Colonel Thanapon Taemsara of Koh Chang police told AFP.
He said Mr Barnes was accused of causing "damage to the reputation of the hotel", and of quarrelling with staff over not paying a corkage fee for alcohol brought to the hotel.
Mr Barnes, an American citizen who works in Thailand, was arrested by immigration police and returned to Koh Chang where he was briefly detained and then freed on bail.
According to the Tripadvisor review the hotel guest posted in July, he encountered "unfriendly staff" who "act like they don't want anyone here".
Mr Barnes and the Sea View Resort did not immediately respond to requests for comment.
Thailand's notorious anti-defamation laws have long drawn scrutiny from human rights and press freedom groups, who say powerful players use it as a weapon to stifle free expression.
The maximum sentence is two years in prison, along with a fine of around €5,000.
Earlier this year, a Thai journalist was sentenced to two years in prison for posting a tweet referencing a dispute over working conditions at a chicken farm.