Originally posted by Russ
The DB and PHP engine would have a hard time with that one. Many people don't use it on every request - hence the reason it is on another page. It would just work our servers too hard to have it on every board view.
This may change in the future though - if was can afford the kit to make concerns like this go away.
Personally, I don't mind clicking on the "analyze board" to get the game history. I don't think, at least the way I use the site, that having the move history on the side would be much of an improvement, as if I want to view the move history, I am also likely to want to move around the pieces to try out tactical variations, and would therefore press the "analyze board" anyway.
It certainly does not seem to me to be worth the increase in bandwidth usage - I'd estimate that about 10 - 20 % of my moves I make without any need to use "analyze board". (The first few moves in a game, plus cases where the best move is obvious) In these cases, in simple or early positions, there's also no reason whatsoever to see the move history every time.
Assuming that most site users also don't feel an urge to see the move history on every move they make, and would probably use the "analyze board" feature anyway, even if the move history was displayed on the game page, the increase in traffic on the website would seem to me to be quite considerable.