I don't think that when you knock someone out of the game and receive their cards, the log should detail which cards you have received. The remaining opponents will try and might succeed in deciphering what your future strategy may be based on those cards. Just a suggestion.
I know I have the rules around here someplace...lol
I don't remember, but I do know that when we played we always had to show each other how many cards we had. Most of the experience that I've had over the past several years has been with playing RiskII online at the MSN Gamezone, using the RiskII CD. In that game there is a drop down menu where you can see how many cards each player has. This knowledge really affects the strategy in the escalating games. When someone has four or five cards everyone trys to take them out for their cards.
That sounds good to me lackattack. Coincidentally, I just went to one of my games and saw that one of my opponents turned in a set of cards and hammered me. I know I wouldn't have attacked him the prior turn if I had known that he already had four cards.....lol