The only point I am missing: Why does the sharing window (or sharing tab) not close by itself after a few seconds, when the sharing is done?
And maybe I (the user) can define in the settings how long it still shows the »everything done« message in that sharing window (or sharing tab) before closing it.

Great extension, simples and very efficient.

I will give 5 stars when it get the same color scheme as the native Firefox extensions