Facebook is testing placing a limit on how many links some users can share when they post on the social media platform.
Notifications seen by some users say they can only share a certain number of links in Facebook posts without a subscription - which starts at £9.99 per month.
Meta has described it as "a limited test to understand whether the ability to publish an increased volume of posts with links adds additional value" for subscribers.
Social media expert Matt Navarra said it signifies the company's bid to monetise more areas of its platforms.
"This isn't really about verification as much as about bundling survival features behind a subscription," he told the BBC.
