Steem Dollars are liquid stable-value currency tokens designed to be pegged to $1 USD. Steem Dollars can be traded with STEEM and transferred to other accounts for commerce or exchange.
Medishares is a Ethereum based, decentralized, open-source mutual aid marketplace. Anyone can join a mutual aid scheme through sending variable amount of MDS to a smart contract.. Anyone can become a mutual aid insurer based on the smart contract templates provided by MediShares, and can profit from it.