Thanks again for this helpful information, which I think is new to the newer and even moderately experienced steemian!
Good point about the SD to Steem ability here on the site not being the best choice for many, at this point in time.
I guess on the weekly power down from Steem Power to Steem, when we all decide to do that (we do probably want to take some money out of here eventually, although now is probably a good time to power UP!) -- the price feed does Not come into play, because we just get an amount of Steem credited to our account that is equal to 1/104 of the amount we chose to power down.
Great answers, which increase the value of a great article!