UserTesting.com - Usability testing has never been easier. Get videos of real people speaking their thoughts as they use websites, mobile apps, prototypes and more!
Spotify - Map shows when two people play same song at same time
Userbrain - Easy, fast, and affordable user testing for websites and prototypes.
SoundCloud - Enjoy music & follow favourite artists
userinput.io - Get on-demand feedback for your app, website or idea. Learn how to improve by hearing real opinions.
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm