This is a community site for Day of Defeat:Source. I've done a lot of work with it. Any critique is well appreciated. There is a chat function that I used with cometchat. It works quite well, but I am worried that it will bog down the website. Feel free to give it a try and test it before you commit to something like that for your own website.
http://axisnallies.com/
http://axisnallies.com/