On Digg there’s some drama because someone registered the community “/wallstreetbets,” and the admins took it from him and gave it to one mod of the subreddit “r/wallstreetbets.”
One day later I see this discussion about how Reddit registered trademarks for some high-profile subreddits.
This could be relevant for the Threadiverse.
They only have to make an example of a few to discourage the rest.
The only real safety is with the instances hosted and run in locations difficult for American companies to pursue legal action