See also {{bug|737508}} 'Add the ability to remember plugin-activation settings'
and {{bug|730318}} 'Opt-in activated plugins should use internal APIs to keep track of plugin activation' and {{bug|711618}} 'implement click to play permission model'
{{bug|742753}} concerns only playing the instance of the plugin that has actually been clicked and also about some of the problems involved with 'invisible'/helper content - this has some prior history as well due to problems encountered when implementing click to play in Fennec.
}}
{{FeatureInfo
|Feature qa notes=[https://wiki.mozilla.org/Opt-in_activation_for_plugins/Test_Plan Test Plan]
}}
This feature has been (and is being) discussed on mozilla.dev.security - feedback and comments is very welcome there !