You could try the highly moderated http://reddit.com/r/Games community. It was started in reaction to the horrible posts on /r/gaming.

They even post warnings on threads that real /r/all where people not subscribed to /r/Gaming will see it and come in to comment.

There is also /r/linux_gaming which will have better discussions on the Linux aspect of Valve's new developments.

But it's not perfect. Just one of the better options.