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Steem - liquid
SteemPower - invested steem for blockchain authority
SteemBackedDollar(SBD) - liquid but must be exchanged for Steem before able to Power up!

https://steemit.com/steemit/@rickyjrx/steemit-101-how-to-power-up <—- walkthrough for powerup

https://steemit.com/steemit/@minnowpowerup/introducing-minnowpowerup-learn-how-to-power-up-the-smart-way <——- Delegations explained

Spreading the #OneLoveDtube

You must power up Steem. You can trade Steem Back Dollars for Steem and then power it up. You get paod SBD as payout for content.