Rating system for online games in Heroes of Might and Magic IV.

to IronAxe:
You see, if a player simply doesn't show up for the tournament and doesn't play any matches, their rating will remain the same according to the existing formulas. However, if they register but don't show up, their rating will be lowered. This means people will stop saying things like, "Just sign me up, I'll beat you all. We'll play then..." It's simply disrespectful to those who are waiting for their opponent at the scheduled time, and disrespectful to the organizer, etc. But if we make the penalty for not showing up more severe and make sure everyone is aware of it, I think people won't just throw words to the wind... they'll think twice next time.

I don't understand you. Award 1 point for showing up and losing. Award 0 points for not showing up. If a player registers and doesn't show up at all, they will receive ZERO points for all matches against everyone. Calculate how much that will be in total :) It will be ZERO, which corresponds to the LAST PLACE. And we calculate the rating based on the placement. Why introduce even more complexity into the formula if the player already receives a sufficient penalty for not showing up???

Added after 3 minutes

Maybe that formula is super-duper, but I don't have time to mess with it.

It's not super-duper. The formula has been tested in hundreds of games, and hundreds of people have a rating based on it. I'm sorry, but if you personally can't figure it out and you don't have time to mess with it, what's the point in discussing what you're going to come up with on your own???
PS. Optimal, if it's not too much trouble, please forward the files I sent to Ley. I've already lost them, and I searched for them for a long time for you. I see that Ley is very interested in the online rating, so I think he wouldn't mind taking a look at what's there. What do you think he'll say about it???