Not that I have a use for it, but it works great.

It does exactly what is says on the box, with one caveat: In Firefox for Ubuntu, if you're focused on a pinned tab, the Home key opens Home as a new tab instead. In Settings for this extension, option is set to use home page.

I cannot set a moz-extension:// url as the new-tab page. It auto-adds http:// to the start of it.

This defeated the purpose of installing this extension in the first place, therefore the 1-star.