Last.fm + Spotify bundled into goodness
Tell us a Last.fm username. We'll give you back Spotify playlists with live updated recent tracks, user favorites, similar profiles and direct links to artists.
Stalkify makes your tracks from Last.fm available in Spotify. It has been lovingly glued together from beautiful pieces of open software by @steffentchr and @nickbruun. There are boring details and source code as well.