What's also nice is that due to the lower amount of users, when you do find these people who can never take anything seriously and just spam, blocking them instantly cleans up your comment sections all over the place.
I'm all for jokes, but they get to be too much. I'm so sick of reading a long "history" of something that ends with "Source: I made it all up". Especially when it's in an informational community. I've been somewhat liberal with my block usage and it has improved things greatly.
Also consider blocking people who mass post dozens of articles all at once but don't comment. They tend to flood communities with posts that don't get much response and are no better than the bot reposting accounts. Especially when they post the same link to 5 different communities and it's all that shows in your feed.