Genie in the blocker Rated 5 out of 5 stars

Brilliant add-on. I have a nice-simple answer to procrastination - block all .com websites. At first its a bit complex to understand, but it does allow you to fine tune things nicely. 10 mins for news sites, 5 minutes for games, 10 minutes for the rest of the .com sites.

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