This is an awesome extension, on which I rely heavily in my daily workflows. But please, please make the tree structures saveable and shareable across firefox (desktop) sessions! Ideally, I would be very happy if TST could be made "compatible" with Session sync. It could be such a breakthrough for the daily workflows of many TST and Session sync users! (I have added the same comment to the Session sync developers too. I hope that there can be an "easy" solution to add tree info to the bookmarks used by Session sync, from which the whole tree can be built back easily by TST when a session is restored...) Thanks a lot!