The resounding success of Airbnb, Dropbox, Uber, and others demonstrates the effectiveness of relying on word-of-mouth to extend the adoption rate of their services.

Every 2key campaign expands the number of 2key users, and each referrer is raising awareness of 2key's existence, features, and ease of use.

As the first donation campaigns ran with 2key in February 2020 raised the equivalent of US$ 3000 and US$5000 in less than a week, including from micro-donations, it confirmed its viral power.

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