Particl is a privacy focused blockchain, which runs on a proof of stake protocol incorporating ring confidential transactions to ensure privacy.  Its main functionality at the moment is in the Particl Marketplace Dapp - which is an Ebay/Amazon type of retail platform run on the blockchain. 

Its an entirely proof of stake coin: the more people who stake their coins, the more secure the blockchain is, and they are offering $5 equivalent in PART coins to anyone who signs up for the airdrop with additional rewards available.  Its currently ranking at 125 on CoinMarketCap, with a rise of over 15% in the last 24 hours since the airdrop was announced.

The full details of their awareness campaign are up on their blog, claiming is super simple and its rare for high market cap coins to have this "one off" kind of airdrop.  High Market cap coins like IOST, Quarkchain and Aelf tend to have ongoing bounty programmes which require extended effort over a period of time, rather than a simple sign up, which makes this one quite special.

Grab them quick - Particl is likely to be a major challenger to OpenBazzar, which despite the potential has never really got off the ground.