Rated 4 out of 5 stars

Quite a great extension. The only one installed over here.

The only hiccup is the lack of a password-protected "prevent NoScript options to be changed" feature -- for guest users.

This review is for a previous version of the add-on (2.1.2.3). 

OS Guest Account

Really, if you don't want your guest to tamper with your settings, spy on your bookmarks/history and access your document, you should really setup a guest account at the operating system level...