Allows you to hide image comments and forum posts from select users on Derpibooru.
Does not hide PMs, uploaded images, or forum threads.
Requires the installation of Violentmonkey.
Install: click here
Go to a user's profile page and click on the link that says "Hide user's comments".
You can view the list of blocked users by going to Derpibooru's Settings page, under the 'Userscript' tab.
Block users from their profile page
View blocked users from site settings