If you listen to music on Last.Fm and more importantly reuse your passwords on other sites then it is essential that you change them now and continue to change them on a regular basis. That is the only way to beat the drip drip of account details being leaked. Don’t reuse passwords. If you need help keeping all of those passwords straight, there are password vaults available for download on your PC, Mac, or Smartphones. Find the one that suits your needs and sleep easy that your passwords aren’t revealing your sensitive information.