Great potential! What's frustrating is there is no way (that I know of) to sync the settings of this plug-in. I'd be happy if settings could be imported & exported, but that's not an option. It would also be nice if privacy settings could be configured per container. I typically configure FF to nuke cookies & history upon closing. But now that I can configure some sites to always open in their own container, it would be nice to preserve (and sync) cookies/settings for those specific containers.