Last.fm is leaving money on the floor by not having cool reports on your music listening habbits like spotify does. Their charts are okay, but don't really translate well to sharing across social media like spotify has.
personally annoying because i don't always listen to music on spotify (or apple music, for inexplicable reasons i have both) but also from bandcamp or my offline collection.
last.fm gets it all, all it needs is the trendy graphics once a year