How’d I Get Here (Firefox extension)

How’d I Get Here (high)? is a Firefox extension that allows you to go to the page on which you first clicked a link to the current page. say, for example, you want to go « back » even after opening a link in a new tab and closing the original tab, or you want to remember how you found a site you bookmarked yesterday, or better if you are sent a link you have already seen, you can astound the sender by responding with a statement more precise than « I saw that on some blog a few days ago ».