Removing Duplicate Scrobbles On Last Fm

So, my last.fm account/spotify went mental last week and logged a single song 1000 times in a row. Since Last.fm is currently in the throes of dying and removing every last useful feature from their site, I was wondering how I could fix this.

Well, sk22 on Github has provided a handy piece of javascript that works perfectly. Simply navigate to the page and enter the script into your address bar (or add it to a bookmark on the bookmark bar) and enjoy your duplicate free library!