Though there are many subreddits which already disallow posts from social media, those built around professional sports in particular may have a big impact on referrals to X.
That's because sports subreddits generally get a lot of content from links to athletes, analysts and journalists who spend a lot of time posting online.
For example, the top two most popular posts of all time on the NBA subreddits are screenshots taken from X, while three of the top ten most popular posts of all time on the AEW wrestling subreddit are screenshots from the platform.
And gaming subreddits have a similar story, with the top posts on the Animal Crossing and Kingdom Hearts communities both screenshots from X.
But that is not to say the bans will necessarily be permanent - Reddit is known for this sort of community movement to protest against wider issues, which doesn't always work out.
In 2023, thousands of communities "went dark" to contest changes to how the platform was being run.
Some of the biggest Reddit communities then began only allowing photos and videos of comedian John Oliver, following comments from disgruntled users.
But this proved to be short-lived.
Eventually the communities mostly became publicly available again, and Reddit's plan ultimately proved financially beneficial - the platform subsequently successfully listed on the New York Stock Exchange.