Turkey banned posting of ads on Twitter and Pinterest on Tuesday, resulting in lost revenue for both companies. The measure is an instrument of a controversial internet law which has been in force since last year.
According to this law, social media must remove content if the Turkish authorities request it. Previously, Ankara had to block access to the site if it thought the messages or images were not welcome.
Critics argue that the law gives the Turkish government the power to silence critical citizens at home and abroad. Social media is a haven for Turks as the government grapples with the mainstream media.
To ensure compliance with the law, social media companies must designate a representative in the country. On Monday it was announced that Facebook has private to meet this requirement. YouTube, which is part of Google, announced a month ago that it would do the same.
In addition to suppressing advertising revenue, Turkey can also be done on the basis of the law Fines and 90% of Internet traffic, making a site virtually inaccessible.
Pinterest, Twitter and its live streaming service Periscope, which is also affected by the advertising ban, were not available for a response.