A cryptocurrency airdrop is a marketing strategy where blockchain projects distribute free tokens or coins to users, often to promote awareness, increase adoption, or reward loyal community members. Typically, participants must meet certain criteria, such as holding a specific cryptocurrency, completing tasks (e.g., joining a Telegram group or following on social media), or simply owning a compatible wallet. Airdrops can boost a project’s visibility and circulate tokens without an initial coin offering (ICO). For example, in 2018, Stellar Lumens (XLM) airdropped $125 million worth of tokens to Blockchain wallet users. While airdrops offer a chance to earn free crypto, they also carry risks like scams or tax implications. Always research the project and verify legitimacy before participating.