Notifications seen by some users based in the UK and US 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 If they take something away a user had before, then charge to add that back in, thats not "adding value". However, this is facebook, and making people pay to post will kill it, so Meta, do more of this.