This has been a very long-time requested feature that saidit is happy to announce for you today! D3rr worked hard to create this new feature for each of us to be able to cultivate our saidit experience in the way we want.
Under any post or comment from any user, you can click 'block user' and that's it!
To unblock them, go to preferences, then hit the tab titled 'blocked', and you can configure your block list. https://saidit.net/prefs/blocked/
This should be helpful if you want to clean up your saidit experience to remove people you don't want to see anymore. Now everyone can shape their feed as they individually wish.