Arbitrum airdrop hype helps zkSync addresses jump over 5X in a week

Airdrops were created as a marketing tool before the ICO era, rewarding traders for promoting the project and holding its token for a certain period of time,

 Airdrops were created as a marketing tool before the ICO era, rewarding traders for promoting the project and holding its token for a certain period of time, 

​Cointelegraph.com News