This extension has changed my life. My work can involve juggling many web pages, whether I'm maintaining issues in JIRA, Writing pages in Confluence, filling in timesheets, or any number of other things. So many mistakes used to happen when I had 3 copies of the same page open at the same time and editing content in 2 of them at once without noticing. But no more! All my pages are now organised in a way that actually mirrors the way I'm working. This is a browser extension that makes me smile! :-)