idle.fm is an app that looks at the music you have "liked" on Facebook, then builds a playlist on Spotify based on recommendations.

I built it in the few hours I have free during the last couple of weeks. There's still a few rough edges (it's quite slow at the mo) but I thought I'd show you guys. It should work on iphones, although there aren't tailored views yet.

Do you think it's worth me continuing development? Suggestions, problems?

Disclaimer: it posts to your profile when you create a playlist.

http://idle.fm