Type of site
|Headquarters||New York City, New York State, U.S.|
|Alexa rank||53,589 (October 2017[update])|
Thunderclap was a platform that let individuals and companies rally people together to spread a message. The site used a model similar to crowdfunding sites such as Kickstarter, in that if the campaign did not meet its desired number of supporters in the given time frame, the organizer receives none of the donations. This was referred to as "crowdspeaking", as Thunderclap and its rival site Daycause use the same terminology.  Backers are required to copy the original message in tweets or social media posts. In August 2018, Facebook revoked Thunderclap's ability to post onto Facebook, making Thunderclap unsustainable to operate. Thunderclap announced that it would be shutting down in September 2018, along with Daycause. The closure came after Facebook changed its terms of service, blocking external apps from posting content.
Thunderclap is owned by De-De, a New York City-based product development studio, which is backed by Australian advertising executive David Droga. Site founder David Cascino says that the idea for the site came to him when he saw a Occupy Wall Street protestor speaking through a megaphone through a crowd and noticed that the crowd was repeating the message, word-for-word. 
Campaigns include activism, fundraising, films, creative projects, and product launches. Thunderclap campaigns have been run by the White House, Major League Baseball, People magazine, Levi's, Durex, TOMS, Sony Pictures, the Discovery Channel, Mozilla, BBC, and United Nations.
- "Thunderclap.it Site Info". Alexa Internet. Retrieved 2014-05-28.
- "The #1 Crowdspeaking Platform". Thunderclap. 2017-10-20. Retrieved 2017-10-20.
- "Raise awareness, amplify your message... with Daycause, your crowdspeaking platform". Daycause. 2016-09-28. Retrieved 2017-10-19.
- Wardle, Hilary (2014-03-25). "How New 'Crowdspeaking' Site Thunderclap Is Revolutionising Online Awareness Raising". The Huffington Post (United Kingdom ed.). Retrieved 2014-07-14.
- "Thunderclap, the online crowd speaking platform, is shutting down". 21 August 2018.
- "Goodbye, Thunderclap: how social media storms closed the popular crowdspeaking platform". Luminous PR. 2018-11-21. Retrieved 2018-12-03.
- Kate Freeman (May 31, 2012). "'Crowdspeaking' Platform Thunderclap Pushes Your Tweets to the Masses". Mashable.
- "David Cascino "Thunderclaps" his way to ADC Gold". Art Directors Club of New York. 2014-05-28. Retrieved 2014-05-28.
- "Thunderclap for Brands". Thunderclap. Archived from the original on 2015-03-15. Retrieved 2014-05-28.
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