The Rewards Hack - Offering Surprise Gifts as Rewards
People love a good mystery
The idea:
People love a good mystery, and they will take the necessary action (like inviting/referring friends) if that’s what it will take to obtain the missing information.
Everyone loves a treasure hunt. The hit TV show from the 2010s "Storage Wars" kept viewers hooked on what mystery items or antiques might be found in abandoned storage lockers.
Another example of this can be found in the Japanese discount store "Don Quijote" (US $5 billion annual revenue). The founder, Takao Yasuda, designed the stores to be like a 'treasure hunt'. In his words: the store's layout is designed so items are "hard to find, hard to take, and hard to buy".
The growth hack: Your website visitors will take necessary action if there's a chance that they will get an unknown mystery reward.
Example: CompanyCam (a company that offers a construction work documentation service) offers a "Mystery Box" for anyone that invites a friend: https://companycam.com/referrals