Voxer is a new app that is mobilizing professional development.
With Voxer, you can record your voice and share your recording with selected members of your network. Best of all, you can create special interest groups
— Hack Learning Series (@hackmylearning) February 8, 2015
Learn more about Voxer for professional development and feedback for learning and see a list of groups you can join at this Brilliant or Insane blog post.