muted sites gets forgotten every time firefox is closed.

[revoconner]

Can we keep a temp file that writes the state of mute so that sites once muted never gets unmuted?

[pkrasicki]

I think that might be confusing to users. Normally when you mute a tab in Firefox, the action will not persist after restart. On the other hand, Chromium has a built-in mute site feature and I'm not sure how it works there. If it is persistent, then maybe it would make sense to do the same here - if it's not weird to Chromium users, then it might be ok.

A compromise could be to add an optional setting that a user could enable (it would be disabled by default) to remember muted sites. That way users wouldn't be confused about what's happening. And since it would be disabled by default, I wouldn't have to worry about changing the behaviour for existing users, which might be confusing to them (do Firefox addons auto update without informing the user? I can't remember).

Another issue is that if we do this (either by default or with the setting), we would probably have to add some way to view and manage a list of all those permanently muted sites and there already are other extensions for that. This one was supposed to be simple, convenient and easy to use.