You often encounter situations where airdrops work well in 1 dimension, but rarely have a good balance between 2 dimensions or all 3 dimensions. Retention in particular is the most difficult dimension, and anything over 15% is usually unheard of.· Capital efficiency is the criterion used for how many tokens are provided to participants. The more efficiently you distribute your airdrop, the more it becomes liquidity mining (one token for every dollar deposited), benefiting whales.