Aside from the necessity of ad-blocking, this is my favourite add-on for usability, although you can overuse it. Sometimes I have 5 browser windows open with tr

Aside from the necessity of ad-blocking, this is my favourite add-on for usability, although you can overuse it. Sometimes I have 5 browser windows open with tree tabs everywhere. Yet another form of externalised memory. Just need to remember backups/bookmarks.