Greatly appreciate your efforts in this much needed critical feature. Let me add-on a few words to express how greatly your efforts are appreciated.

Facebook is the face of evil corporate practices in the beginning of the 21st century. It consistently lies about its activities regarding the personal data of users.

Not all internet companies use practices harmful to users, but many internet business models rely on violating user privacy for profits.

Most people remain unaware of the amount of highly personal information is stolen from them when they use the internet by "trustworthy" companies that don't reveal all of the ways user's data will be used
— it will probably be sold to third parties/companies,
—those third party companies could use it for nefarious purposes,
— once compiled, those third parties sell user's data to yet another company and the cycle continues, and left unabated will continue indefinitely.

Additionally, using the same techniques employed by the military, organizations collect data obtained from endless number of sources to compile a file on individuals that is accurate beyond belief.

Users should approach the internet as anything they do on the internet will be available forever. Unfortunately, no one is immune and we are all vulnerable and are being manipulated to some extent now, tomorrow, and forever.

Be careful out there and demand laws to to decrease our exposure. There are many reasons there aren't laws already for such an obvious vulnerability. One is that the politicians we count on to protect us want the information stolen on the internet so they too can compile a dossier on voters and persuade (manipulate) voters to vote for them. Yes, they (many, if not all) profit from the use of your information.

Anyone can surrender their own individual rights, should they so desire. However, they don't have the right to surrender the rights or privacy of others.

So, again Mozilla Code Monsters, thank you for providing a method to hold the Facebook Demons off, if only for a little while longer.
AF1

The indicator line is SO annoying. I don't need any indications that my tab is contained. I'm just going to put up with Facebook spying on me rather than look at that stupid line anymore making me think it's the active tab.

I've been using this add-on for a while now and just yesterday I searched for a gay dating seminar and then next time I launched Facebook one of my recommendations was for a gay dating Facebook group. :-(