Reddit replaced the controversial practice of 'shadowbanning' its users with the suspension of their accounts.

Reddit had shadowbanned users seen to break the site's rules, and had considered it an efficient way to stop spammers flooding its platform. 

Shadowbanning consists of users being notified via email and on the website that they had been suspended and for how long. When shadowbanned, Reddit users could only see their own content, were not informed that they were banned, and had to go through an opaque and largely unstructured appeals process. 

An unofficial subreddit, r/shadowban, had even been created to let users know if they had been shadowbanned. 

Reddit's shadowbanning system had been seen as opaque, largely unaccountable, and was accused many times of being unfair and of censoring appropriate and legal content.