Rdio has one last treat for you before it rides into the sunset following Pandora's acquisition. Visit a special farewell site and you not only have a handy place to export your data, but a retrospective look at your listening habits. You'll know what you first played, what your favorites were, and who you shared tracks with. It's hard not to get a little misty -- in some ways, this is like digging up a mix CD you made in high school. Still, it's good to see Rdio acknowledging that you're losing a part of your history, not just some playlists.