I have over 14,000 twitter followers who subscribe to my list because they want to keep up to date on clean reads for kindle (Mostly Christians).
What is Thunderclap?
It's a tool anyone can use who wants to spread the word to their Facebook or Twitter friends. If you want to use Thunderclap, you must have a minimum of 100 friends who are willing to join in or Thunderclap won't sent out the alert/invitation (via your friends' accounts) that you've written up. If you do make it, then every friend who has agreed to help will have a one-time alert/invitation sent to everyone on their friend list on the date that you select. For more info, google search Thunderclap.
We cannot guarantee that your thunderclap will fill with the required members, but can only add our support