China has announced it will extend its recent crackdown on online smut (which saw search engines like Google and Baidu criticized) to mobile phones. “We will incorporate ‘lewd’ messages spread via mobile phones into the crackdown,” the report quoted a joint notice from the Ministry of Public Security, the Ministry of Culture and five other government offices saying, according to Reuters.

SEE ALSO: Report: Mobile Adult Content To Hit $4.9 Billion By 2013

It doesn’t say how the messages will be discovered—whether during transmission or by searching handsets—or precisely what the definition of “lewd” will be between married couples. Juniper Research recently predicted that the global adult content market would grow from $2.2 billion in 2008 to $4.9 billion by 2013, with China & Far East remaining the second biggest market with revenues predicted to grow to about a billion dollars.