In case the title was confusing, this is a site that lets you input the name of a band or artist and then will show a sort of web of related artists, with a distance based on how likely people are to enjoy both artists.

I first discovered it a loooong time ago, probably back when I still watched Vsauce, then forgot about it a week later. I thought of it today and decided to track it down. It's not always 100% accurate (Adam Lambert was closer to Rihanna than Destiny's Child) but so far it's done a good job. This is how I first found the Morning Benders and Phantogram.