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From my point of view only the 50/50 option is ever useful! The SBD price is pegged at 1$ and should never fall under it. Even if it does you do have the option to convert SBD to Steem, like SBD is worth 1$. So always use 50/50 rewards. :)

Because you like it.

Always 50/50 unless STEEM less than 1 USD