SaveMyMix (page no longer resolves as of 2017-09-25) is a quick and easy tool for exporting your playlist data from Spotify (more services coming soon). It encodes playlist data in CSVs and zips the files for download. All of this is done client side in the browser. This helps you maintain data independence and reduces reliance on 3rd party services.
- 2015-08-21 Spotify response: SORRY.
Big Mood Machine Spotify has plans to analyze playlists and target advertising based on the emotional mood of the listener.