I'd also be curious about the auto grouping. I'm currently using Auto Tab Discard, which has a "Permanently delete (remove) old discarded tabs if they are inac

I'd also be curious about the auto grouping. I'm currently using Auto Tab Discard, which has a "Permanently delete (remove) old discarded tabs if they are inactive for (in hours)" and I'm manually grouping things with Panorama View. I don't know if it's built in to Firefox or one of the addons, but I've noticed it will already suggest an existing tab when I type the name/site in to the address bar.