This is an important and effective extension for anyone who has a stature that should be protected, or who otherwise recognizes the seriousness of security from third-party exploitation. The breadth of ubiquity of FB interfaces makes this valuable for everyone who browses the Web--not just FB users. Most FF users understand the importance of security, and this extension effectively supports that objective. Inherently, any type of security will always cause some inconveniences of legitimacy, and if some occasional complications are unacceptable, either browser security isn't for you, or you should consider being among those who help to refine open-source software like this--which volunteers allow for others to analyze to demonstrate the integrity of the security. It excellently complements other anti-tracking/security software, with FB-specific protections, but without needlessly broad permissions or common conflicts; this is superlatively well-targeted security.