Dutch startup Playlistify has gone live with a service that lets people create “instantly interactive and shareable music creations”. Playlists, in other words. It can pull in people’s data from iTunes, YouTube, Last.fm, Spotify, SoundCloud and We Are Hunted (among others) and output it as playlists for Spotify, Last.fm and YouTube. Other people can then find and play those playlists, with Twitter integration meaning they can also see the latest tweets from artists who feature in them. iPhone and Android apps are on the way too. The startup says it’s “against illegal file sharing”, so makes playlists link tracks to online music stores, artist sites and legal streaming services.