SafePost airdrops up to 4500 STAMP tokens (~$6,75) to their airdrop participants for the following simple tasks. They also offer a referral programm where you can earn additional STAMP for each user you refer.
Note: earn additional STAMP by speaking about SafePost on Facebook, Twitter, LinkedIn, Telegram, Contest, BitcoinTalk and Medium social networks.
You will be rewarded from 5,000 STAMP to 500,000 STAMP depending on the quality of your publication. Click here for more information.