Thanks to a forum post, I just discovered the Analysis Board & Editor under Resources pull-down tab.  Will someone tell me how it operates:  procedure to get PGNs there; if I had a game computer analyzed, can I import the analysis to this site; can I save my annotation of the game I make at this site?

If there is already a site that explains everything, I would appreciate its identity. 

Seems like a good site for annotating my games.  What use have players made of this.

Thanks.

the analysis board is awesome. When you're looking at one of your games, there is a button labeled "get pgn" somewhere near where you see "analysis" "flip board" etc. Click on that an it will let you save the pgn or open it with an editor. I save it, open it with notepad, select it all, copy, and then paste it in to analysis board. That's the only way I know how to do it. Sounds a little complicated but really it only takes seconds.

Thanks.  I will work on it and probably get back to you with questions.

You can view your games by going to either PLAY -"live chess" or "Online chess" depending on which type you're playing. As a matter of fact when you view games there, there is a button which says "analyze" which will open an analysis board directly with the whole game already loaded. My comment above was intended to explain one method of getting a pgn file and loading it in to an empty analyzer board.