The EXCHAIN platform is a blockchain-based and decentralised application which aims to shape a revolution in the digital advertising ecosystem. Exchain is rated 4.2/5 by ICO Bench.
Exchain is airdropping 300 EXT tokens for supporting on social media channels to 5000 airdrop participants.
All relevant links and info:
https://airdropalert.com/airdrop/998