What is free airdrop token?
Could you please elaborate on the concept of "free airdrop token" for me? I'm a bit unfamiliar with the term and its implications in the cryptocurrency world. Could you explain what exactly it means? Is it a promotional activity by blockchain projects to distribute tokens to their community members? And how does one usually become eligible for receiving these tokens? Also, are there any risks or cautions that one should be aware of before participating in such airdrops? Thank you for your time and explanation.