Отличное дополнение. Very good!

When using the "limited to designated sites" setting you have to wait for every tab to time out before you can add it to the container.
Also the possibility to use wildcards in the URLs would be a minimum requirement to make it usable for a developer.

Essa extensão funciona bem e é em geral prática de ser usada. Aparenta melhorar a privacidade durante o uso de forma adequada.