hmmm. Im no pro on it but it has something to do with the internal value of the sbd that stays on steemit. You right, its not pegged because if it was then it could not go above $1 but inside steem, it will not drop below $1 because you can trade it for $1 worth of steem and earn intrest if kept in savings when the witnesses activate it or something lol im a crypto comedian so what do I know but ... "truce"
Thanks for the comment buddy.
Theoretically yes if the price is below $1 they should have the interest feature turned on, but last time it was down there they didn't.
If SBD is below $1, its actually better to go with 100% power up, but then you have no liquid rewards.