Vraiment très pratique.

Excellent concept! It adds to my peace of mind, and is easy to get started with and maintain. And I love the way it integrates with Facebook container. But a feature request, if you please: To specify top domains for a container, and have all pages under that domain and its subdomains, open in the container, instead of having to add each and every subdomain as they are encountered.

I really like the concept and the smooth implementation into the Firefox browsing experience.