Developer reply by Infocatcher
Rated 4 out of 5 stars
great tool, I use it all the time.
But a very annoying behavior for me, when you close the new opened tab, it doesn't return back to the from tab, but to the first tab on the left. That's the only problem for me for this fantastic tool. Thanks and congrats :)
But you can change this behavior with other extensions:
LastTab (https://addons.mozilla.org/firefox/addon/112/)
or
Tabberwocky (https://addons.mozilla.org/firefox/addon/14439/)
To create your own collections, you must have a Mozilla Add-ons account.