I use this and love it because I still communicate with a lot of people via Messenger. I'd delete my FB except I've got a ton of logins to other apps that use it, unfortunately. This blocks the news feed completely.
Chrome only (recently switched to Firefox). But it looks awesome. It's incredible to me how effective the post at the top of the timeline tends to be. They know exactly how to suck you into scrolling.
https://chrome.google.com/webstore/detail/news-feed-eradicat...