Rated 3 out of 5 stars
Looks promising and really minimalist (positive). I like the way how to edit the filter list(s). Just left click the icon and a simple panel opens to directly make changes. Then just click the "Save" button and done. Good solution.
Now the bad: It doesn't seem to work. It blocks nothing from the lists. I tested it with FF 24 & 27. With default lists and own entries. I hope you can fix it. This add-on has great potential and could replace the other minimalist blocker add-on "SimpleBlock", which I'm using for now.