Rated 5 out of 5 stars
I switched to Chrome for a while but came back to Firefox specifically for LeechBlock. I love that it combines simple blocking with the Pomodoro technique. I only wish there were a way to whitelist certain sites. At any rate, it has always been really helpful to me and I've never encountered a bug. I've tried 5 or 6 different time management extensions across Firefox & Chrome, and this one is hands down my favorite.This review is for a previous version of the add-on (0.6.6).
Thanks for the review!
You can whitelist sites using the + prefix: