This add-on is the best web blocker I've found so far! Most just all-out ban sites, but Intention allows me to get a fix of a website but hold myself to how long I want to go on it. It is super helpful as an adult with ADHD, I still get to enjoy fun sites but not lose my self-control. I also love the cool-down feature, it's super helpful that the app realizes when I am getting a little too off track. Overall, it helps me help myself and I love it!