Peoples' willingness to take action when promised a reward
Research:
Dropbox used the reward bias to immediately reward users with free storage for each invite they sent to friends. In just 15 months, Dropbox increased annual revenue between 250 million and 400 million dollars. This cost-efficient reward system was inspired by PayPal’s successful “get $10 when you sign up with PayPal today” campaign that helped reach them to their popularity today, without the financial loss.
