back to close Rated 4 out of 5 stars

a good feature option would be if there is no back history, close tab instead

Can't reliable do that right now. I am going to have to write a patch for Firefox to better support what this extension does, and then I can add such features. Trying to get another patch into Firefox for another extension right now, but I might try this one next.

I like it Rated 5 out of 5 stars

Very useful. Mtks.