The unique mechanism makes Forest much more effective than other similar addons. You feel bad for "killing" the tree if you give in to temptation, and the addon doesn't make it easy to do so. If you try to visit a blacklisted site, rather than simply killing the tree or being redirected, the site will be greyed-out and Forest will remind you of your fragile, growing tree; if you aren't ashamed that you even thought of it at this point, you'll have to click a button labeled "give up" to access your poison. On the other hand, if you're able to stay on task until the timer runs out, you get a happy little tree as a reward. Great if you need a little extra help staying away from social media, games, or any other online vices.