Spotify - Map shows when two people play same song at same time
Wonder.fm - Discover new music. New site by We Are Hunted co-founder.
Playlist Machinery - Tools that help you create & organize your Spotify playlists
CLiGGO MUSIC - CLiGGO MUSIC provides free music enjoyment on your pc, smart phone or tablet.
Magic Playlist - Get the playlist of your dreams based on a song
avant.fm - Avant.fm provides a customizable, listenable feed of new releases from the best indie record labels, across all genres.