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Right now I'm selling my SBD just because the BTC exchange rate is crazy high. If/when this anomaly stops, I'll do more powering up.

I don't need to spend that much of my crypto right now. I need the SP more at the moment :)

I use upvote bid bots to upvote my posts. I have them vote on posts that are 6 days old, then when that pays out I vote on the next 6 day old post. Since I get as much or more SBD as I put in, it lets me recycle my SBD and earn lots of SP while I do it.