A Thunderclap!
I am trying a brand new media tool called Thunderclap. I am using it to promote my online concert on January 25. Join this Thunderclap and become a supporter to help me promote this event!
UPDATE: I have learned a bit more about this since I posted. What you do is connect this to your Facebook, Twitter and/or Tumblr accounts. When you support a Thunderclap you authorise these social media sites to post about the Thunderclap on your behalf on the given day.
