Multi-chain airdrop strategies require understanding the unique characteristics of each ecosystem. Solana's high throughput makes it ideal for projects requiring fast transaction speeds, while Avalanche's customizable subnets attract diverse use cases. Ethereum remains the most established platform with extensive infrastructure. Focus on projects that align with the strengths of each chain - for example, DeFi protocols on Ethereum, gaming on Solana, and enterprise solutions on Avalanche. Participate in testnets and community initiatives across chains to increase visibility. Monitor cross-chain bridges and interoperability solutions, as they often distribute tokens to early adopters.