If you are looking for blocker to save you from leech sites (social media, video platforms, porn, ...), this is the extension for you.

The author seems to really understand that our willpower is not infinite and this extension can make it really hard to access sites that leech on your attention.

100% recommended.

One thing I really miss is some automatic syncing to some external storate, so you can sync your mobile Firefox and PC Firefox frictionlessly.