How to benefit from airdrops?

Could you elaborate on how individuals can capitalize on the phenomenon of airdrops in the cryptocurrency world? Could you explain what airdrops are, and how they differ from other forms of cryptocurrency distribution? Additionally, what are some of the strategies or best practices one should consider when attempting to benefit from airdrops? Are there any risks involved, and how can these be mitigated? Also, how does one stay updated on potential airdrop opportunities, and what factors should they consider when evaluating the legitimacy of such offers? Finally, could you provide any examples of successful airdrop campaigns and their impact on the cryptocurrency community?