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You can exchange your liquid Steem for SBD on the market :)

Right. SBD makes more sense because promoted posts compete agianst each other. You want a stable value. Imagine you could promote a post with STEEM and then the market value of STEEM drops 20%. Someone else can outbid you while paying less.

Im more inclined at looking at it as a burn mechanism due to the high inflation.

Burning SBD is essentially the same as burning STEEM, because it reduces the amount of STEEM that can, and very likely will in the current environment, be created by converting the SBD to STEEM. Essentially the burn comes out of virtual supply rather than current supply, but it still happens.

Excellent point.

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