Rated 4 out of 5 stars

If you find yourself mindlessly clicking away from productive stuff and toward favorite SNS or other media, this is for you.

Four stars instead of five because I always have problems with the language on the rules. The whole AND/OR distinction does not make sense to me, and I always have to play with it to get it to do what I want. It works, mind you, it's just that the language in the prefs is not intuitive.

This review is for a previous version of the add-on (0.4.2.1).