Steem is a blockchain-based social media platform that was founded by Ned Scott and Dan Larimer in the summer of 2016 . It ’ s thought that around 500,000 people use it and market capitalisation is $ 850mn . Steem users earn rewards by posting relevant content , curating quality content by upvoting and by holding Steem-based currencies in a vest fund , which generates interest . Rewards depend on the number of “ likes ” a post gets .

Started back in August 2015 , Augur is the brainchild of Jack Peterson and Joey Krug . Market capitalisation is $ 1bn . Augur is a decentralised prediction market that ’ s built on top of the Ethereum blockchain . A prediction market is a tool for forecasting the outcomes of future events . Prediction markets allow users to trade based on their expectation of how a real-world event will play out and lets them buy shares based on these predictions . 75