Pandora's Thumbprint Radio station lets you listen to all your thumbed-up tracks in one place. master1305/Getty Images If you've used Pandora for a while, you know that you mark songs or artists that ...

One of the things that’s always seemed a bit odd about Pandora’s excellent internet radio service is that it doesn’t sort music by genre. Instead, you pick a song or artist you like, and Pandora will ...