CrowdScanner: A social media experiment in crowdsourcing. (Join our team, today!)

If you see Chuck, take a picture and upoad it, today!
If you see Chuck, take a picture and upoad it, today!

How can social media be used to accomplish a seemingly impossible task? Today, a social experiment called the “Tag Challenge” sends 5 individuals to roam the streets of New York, DC, Bratislava, Stockholm, and London. The task is to locate them before the sun sets based only on their mugshots. You can contribute by taking and uploading pictures of these individuals if you see them, or even just inviting others to participate!
The $5000 prize will be distributed among the participants, to those who submit pictures as well as those who recruit.

For the CrowdScanner team (which includes SciStarter),  the challenge is a chance to study how information propagates through social networks and what it takes for a message to go viral. The lessons we  learn will help us understand successes and failures of social media in recent events. You can become part of the challenge and help the study by joining our team at

For more info, or to sign up, go to:

Who’s the CrowdScanner team?
The team consists of a group of researchers from MIT, UCSD, Masdar Institute, and University of Southampton (including the guys who won the Red Balloon challenge).

What’s Tag Challenge?
Tag Challenge is a competition to acquire pictures of 5 volunteers, each in public in a different major city, in a single day. Due to its geographically distributed nature, the competition can only be won by the crowd-sourced efforts of people like you and me. More at

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About the Author

Darlene Cavalier

Darlene Cavalier

Darlene Cavalier is a Professor at Arizona State University's Center for Engagement and Training, part of the School for the Future of Innovation in Society. Cavalier is the founder of SciStarter. She is also the founder of Science Cheerleader, an organization of more than 300 current and former professional cheerleaders pursuing STEM careers, and a cofounder of ECAST: Expert and Citizen Assessment of Science and Technology, a network of universities, science centers, and think tanks that produces public deliberations to enhance science policymaking. She is a founding board member of the Citizen Science Association, a senior advisor at Discover Magazine, a member of the EPA's National Advisory Council for Environmental Policy and Technology, and was appointed to the National Academy of Sciences "Designing Citizen Science to Support Science Learning" committee. She is the author of The Science of Cheerleading and co-editor of The Rightful Place of Science: Citizen Science, published by Arizona State University. Darlene holds degrees from Temple University and the University of Pennsylvania and was a high school, college and NBA cheerleader. Darlene lives in Philadelphia with her husband and four children.