Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/93295 
Year of Publication: 
2014
Series/Report no.: 
IZA Discussion Papers No. 7995
Publisher: 
Institute for the Study of Labor (IZA), Bonn
Abstract: 
Word-of-mouth, referral, or viral marketing is a highly sought-after way of advertising. We undertake a field experiment that compares incentive mechanisms for encouraging social media shares to support a given cause. Our experiment takes place on a website set up to promote a fundraising drive by a large cancer research charity. Site visitors who choose to sign up to support the cause are then asked to spread the word about the cause on Facebook, Twitter or other channels. Visitors are randomly assigned to one of four treatments that differ in the way social sharing activities are incentivised. Under the control treatment, no extra incentive is provided. Under two of the other mechanisms, the sharers are offered a fixed number of points that help take the campaign further. We compare low and high levels of such incentives for direct referrals. In the final treatment, we adopt a multi-level incentive mechanism that rewards direct as well as indirect referrals (where referred contacts refer others). We find that providing high level of incentives results in a statistically significant increase in sharing behaviour and resulting signups. Our data does not indicate a statistically significant increase for the low and recursive incentive mechanisms.
Subjects: 
crowdfunding
referral marketing
JEL: 
C93
D64
L31
M31
Document Type: 
Working Paper

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