Well, its probably not much of a problem. I suppose that if you invite your opponent to analysis after the game it takes place on a private board?
I saw that you were playing and thought it would be interesting to watch a few games to see some streetfighting in action 
. I went away from the computer for a while and got surprised to see that I somehow was watching your analysis board (figured it was post-game analysis), made me feel a bit like some kind of stalker...
By the way, is the free lecture open for all members?
Is it possible to follow another players games only, ie. not their analysis boards &c?