This product replaces my previous ad blocker and URL shortcut add-ons, SafariBlock and Sogudi. When Apple gave input managers the heave-ho, I had to find something else, and this was the only free option. So I tried it. It's perfect. It's easy to configure, and the ads it chooses to block seem to be reasonable. I still get ads, but the annoying or NSFW ones aren't there anymore. If that's not good enough, you can configure it to block more ads. I recommend trying it.