Thanks to this add-on, I think I'm finally on my way to overcome my surfing addiction.

This add-on has many different options to allow different kinds of blocking and also allows you to put them in groups called 'sets.' For example, you can block a website you never want to go on, block a website on certain times of the day, and websites that aren't blocked at all. All of these options can be activated simultaneously and that is what I think makes this add-on better than most others of the same purpose, where they generally only allow blocking and nothing else.

My only complaints (explaining the 4 stars instead of 5) are that the interface isn't as nice as it could be. I would like to be able to get to all the options without having to scroll a lot. Another complaint is that some descriptions don't feel quite as clear until you enable them for yourself.