A crypto airdrop is a marketing strategy used by blockchain-based projects to distribute free tokens or coins to a large group of people. Typically, airdrops are used to promote new projects, reward loyal users, or increase the adoption of a cryptocurrency. Participants often need to complete simple tasks, such as joining a community, following social media accounts, or holding a specific token, in order to receive the free tokens. Airdrops are an effective way to generate buzz and introduce a cryptocurrency to a wider audience.