Update on Pandora/Last.fm Mashup
The mashup is basically the Pandora player, and listeners have the ability to add music played by Pandora directly to their Last.fm playlists. Last.fm favorite artists for the user are also displayed, and can be used to generate on the fly Pandora stations.
What’s amazing to me about Pandora’s official sanctioning of the mashup is that it is effectively taking Pandora user data and sending it directly to Last.fm. Good for them for recognizing that openness is better than closedness.