However, it seems to be entirely empty! I am aware that I can use the individual RSS feeds for each forum, but that is not what I want. What am I doing wrong? Can a fellow mouse please help me?
Ah, you are right. I think you’ll need to subscribe to each forum individually, then, or use some sort of feed aggregator that lets you see them in a group, like the “folders” in Google Reader.
Also, you can try Yahoo Pipes. They have a nice visual lay out for designing the flow of your code and it’ll make figuring out how to aggregate all the feeds together.