Blacklist It! is a Chrome add-on developed by r.lodter that allows users to block unwanted subreddits from appearing in the Popular section of the Reddit website. With this tool, users can create a list of subreddits that they no longer want to see when browsing r/Popular.

The add-on provides a simple and user-friendly interface where users can easily add subreddits to their blacklist. By typing in the non-case-sensitive text field and clicking "add", users can quickly add a subreddit to their blacklist. To remove a subreddit from the list, users can simply click on the item they would like to remove.

With Blacklist It!, users can personalize their browsing experience on Reddit by eliminating content from specific subreddits that they find uninteresting or irrelevant. This add-on is a useful tool for those who want to customize their Reddit experience and focus on the content that matters to them.