Increase the usefulness of tabs by adding the originating source of the current tab to your tab's history. That way, the next time you navigate back in a tab and reach the very first page, simply press \"Back\" one more time to go to the URL which originally launched the tab.
Easy and intuitive to use. And never lose track of a tab's source again.
Perfect for going down a rabbit hole of internet searches and then wanting to find out which website launched which tab.
(In the latest version of Chrome, the back button is sometimes disabled for fresh tabs. If the back button is disabled, you can click on the extension icon to go back too.)