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thank you for such as great add-on
question,how exactly work?example when i visit addons.mozilla.org the request by browser will send to dns server?then if itis not in blacklist will opened?
edit:thanks for replay.now i understand it and keep addon

Questa recensione riguarda una versione precedente (1.01) del componente aggiuntivo. 

> question,how exactly work?

1. you visit "addons.mozilla.org"
2. before request this domain checked in DNS-servers
3. after check this site will be open (or blocked) in your browser - depending on the settings of your rules