It's a bit hard for the first few days after you install this extension. Personally, I had to add license comments to all of the JavaScript I wrote, and had poor experiences on many sites due to blocked JavaScript. But overall, it's great running only free JavaScript.

Great way to eliminate proprietary software from your life, thanks fsf :)

A great add-on which lets you run the js without the bloat

I give 5 stars because I support the FSF, however this plugin is not reading some licenses present on the current version of WordPress at /wp-includes/js/jquery/jquery.js and wp-includes/js/jquery/jquery-migrate.min.js

GNU for life.

More convenient than the old XUL one, makes me want to use it again. (And I did installed it just now.)
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Feature Request: Can you add a button to temporally allow current page's domain?

And it's better to add another button to let us temporally disable it conveniently.