Friends Who Listen (Last.fm) v1.4
You probably noticed the new Last.fm design. One thing I really miss, the Friends who listen to XY widget.
So I wrote a browser extension for that.
It uses the official Last.fm API so it's quite fast (it depends on how many friends you have). But to save requests, caching is enabled by default. You can disable it or choose when the cache should expiry in settings (the cog icon).
Note: by friends I mean people you follow, I just like the word friends more.
GitHub repository: https://github.com/xxdavid/lastfm-friends-who-listen