An airdrop is a marketing strategy in the cryptocurrency world where free tokens or coins are distributed to users, usually to promote awareness, reward loyalty, or decentralize token ownership. Airdrops can be automatic—sent to holders of a specific crypto—or require tasks like signing up, following social media accounts, or referring others. They’re commonly used by new blockchain projects during launch phases or as part of community-building efforts. Airdrops don’t require users to buy the token, making them a popular way to engage the crypto community. However, recipients should always verify legitimacy to avoid scams or phishing schemes.