Mozilla launched its Persona single sign-on platform to let you easily log in to websites without chaining yourself to a social network or storing passwords locally. However, it never really caught on. As with Thunderbird, Mozilla eventually turned most of the project over to the community. And now, Mozilla is pulling the plug on its remaining involvement. As of November 30th, any sign-ons handled through persona.org will stop working -- if your website uses official Persona sign-ins, you'll have to find an alternative. Mozilla will continue to offer developer support and security fixes until that fateful day, but it's not pouring more effort into it beyond that.