Spotify - Map shows when two people play same song at same time
Skuuudle - Discover, match and monitor your eCommerce competitors.
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
Price2Spy - Price2Spy is a price monitoring, pricing analytics, and repricing tool, meant to help eCommerce professionals keep an eye on their competitors or retailers.
SoundCloud - Enjoy music & follow favourite artists
BuiltWith - Find out the technology behind websites