Truthfully, 99% of this is over the average layperson's head.
I'm really thankful for posts from fellow-Steemians (@lexiconical comes to mind) who are quick to offer a simpler explanation for informative posts such as this.
Today, I've noticed that my replies are duplicating, with an illusion that it's in the perpetual loop.
Btw, without proof, I wonder if Steemit is under another attack. Today, I powered up using blocktrades, and last check over four hours ago, continue to wait for the coins to post in the SP account.
At least, we can be encouraged that the developers are working hard behind the scenes. I can't imagine what running something this large and growing must be like.
Peace.