Very Useful Rated 5 out of 5 stars

The only problem I have is cosmetic -- the leechblock toolbar button is too high with that little arrow underneath it, and makes my toolbar take up additional space on top that it shouldn't need to.

Also, it would be nice if there were some way to mark a block set as "disabled", so I can turn it off without losing my settings for that block. The blocks come in really handy for days I'm supposed to be working, but they're fairly annoying when I'm taking the day off and want to browse more distracting sites.

This review is for a previous version of the add-on (0.6.3.1-signed).