One more of our well-known “growth hacks” has its roots in the scientific study of human interaction. This is a “growth hack” called “queue jumpers.” People who cut in line in public may not have our affections, but we sure do enjoy the feeling of triumph when we pass the people who were waiting.
Mobile-only banking Monzo used this system to successfully grow their user base from zero to over 250,000 in just over two years. The number of people in front of and behind the user in the queue was displayed. They could also bypass the waiting list by referring their friends, thereby fueling even more expansion.
Robinhood, a mobile app for trading stocks, used a similar strategy and attracted 1 million users within a year.