I use this extensively to declutter/dedistract most websites I visit: Facebook, Twitter, Reddit, Medium, Gmail, YouTube, and so on. It's a real life-changer!
See the Boosts shared by other users here: https://arc.net/boosts
We need more browsers that focus on user features, not website features. The web is basically beyond feature-complete already, but the tools we use to interact with it are so basic. Like riding a horse on an interstate!