It's high time that an official statement was made about the use of keys. Steemit has to be the only site I know of that has left its use and functions to be explained by 3rd parties. These important details need to be front and center for all users, all the time!
I'm glad to see progress finally being made in this regard.
Since steem.centerwiki has already done an excellent job of making sense of Steem, it would be prudent and most efficient to simply link to it as a great reference manual.