Hello, my name is Leandro, I'm from argentina, i just wanted to show a site that i developed with drupal: www.clanstug.com.ar, it's for a clan of gamers of the game "call of duty: united ofensive". There are still some details to finish, but basically it's completed. I'm quite happy with this site because it's the "cleanest" drupal site i've done. I've recently began undertanting module developments and advance theming tecniques so i applied all those new skills to the site. I managed to get a cross-browsing design and it came up quite nice.
I used og the configure a unique group which would be the clan itselft and it's members are the clan members as suposed, this way i can use all the features that og provides for emailing and subscriptions to the clan's contents. Then i configured a "wars" system in wich they can schecule battles against other clans, i did this with variuos content tipes created with cck and a "war" content type with nodereference fields to the other content types, so a war has: "oponent", "game", "mod", "map/s", etc.
If you have any suggestion about which other module could be usefull for the site you're welcome to tell me :) I hoep you like it, thanks