If you no longer want to support a Thunderclap campaign, or if you'd like to change the message you want to share from your social media account when the campaign ends, you can easily opt out.
1. Go to the campaign page for the campaign you originally supported.
2. Log into Thunderclap with the same social media account (Twitter, Facebook, or Tumblr) you used when you initially backed the campaign.
3. Refresh the campaign page. You should see a box that looks like this:
4. Click the "Opt out" button at the bottom and remove your support. You're all set!
5. If you'd like to re-support the campaign, simply click the red "Support with" button on the page and back the campaign again.