右クリック禁止やコピペ禁止のサイトでは重宝します。
あとは怪しいサイトはこれ有効にして見た方がいいです

Really useful although it takes time to set-up the settings and favourite pages as well as customise new pages frequently enough. Upgrades are not necessary, it is good as was designed. Thank you.

Tutto ok

A great addon. Of course it's impossible to use the web today with scripts turned off by default, but this addon is still great to have. If you are going to a site you are really not sure about, this addon can allow you to disable all scripts. It also automatically protects you from certain types of potential attacks. A great and trusted addon to have to help keep your computer safe, even if you turn off the "Disable all scripts" setting.

The one and only.

Google