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SBD is Steem Based Dollars

10K would be in Steem Power, which is actually is worth more like 24000 ish lately. But it's just a delegation rental.

Thanks. So its a delegation rental? I have to pay it back? If I use the SBD, how could I pay it back?

No, I would delegate to you, and then I can withdraw it when the rental is over.

You pay 65 SBD and you'll get 10,000 Steem Power for 1 week. When the 7 days have passed you'll be back at your normal SP again, as the 10,000 SP will be taken away from you. This is a rental service.