On-line rating (discussion)

I like the automated rating calculation system on the World Cup League website, organized by SAG. When players start a game, one of them creates a game report, and the other confirms it. Visitors to the site can see which games have started in the list. After the game ends, either player can complete the report, indicating the winner. The rating is calculated immediately. The opponent has the right to cancel the report if they disagree with something. The only downside is that there is no option for a draw, but overall, the instant recalculation of the rating is a good thing.