Works very well. Interface is easy to use.

The function of this Add-On is difficult to automate because testing all those sites mechanically is going to set off countermeasures. Plus, where cookies have been deleted, the client is going to recognize gateway portals as a failure to load.

I give it 5 stars, but I do recommend that you implement check boxes for batch whitelisting because you're always going to get a lot of false positives.

Kudos.

EDIT: I just noticed the filter boxes at the top of the tree. You might still simplify whitelisting, or allow filtering entries as you go. Still, no redundancies or procedural anomalies. 5/5