自動低評価マシーン is a Chrome add-on that allows users to automatically dislike any YouTube video they watch. With this tool, users can quickly and effortlessly express their disapproval by automatically clicking the dislike button on YouTube videos. This add-on applies to all regular videos on YouTube, except for short videos.

The main feature of 自動低評価マシーン is its ability to rapidly apply dislikes to any video on YouTube. This can be useful for users who want to express their opinion on multiple videos without manually clicking the dislike button each time. By automating the process, users can save time and effort when expressing their dissatisfaction with certain YouTube videos.

Overall, 自動低評価マシーン provides a convenient solution for those who frequently want to dislike YouTube videos. However, it's important to note that the add-on only focuses on dislikes and does not provide any other features or functionalities. It is designed specifically for users who want to automate the process of expressing their negative feedback on YouTube videos.