I don't know whether it's my lack of knowledge on RSS, but I'm not sure whether it's working properly.

I was expecting the feed to show me threads that have been changed (e.g., new threads, new posts) since the last update.

However, while I expect a lot of new posts from the feeds that I subscribe to, e.g., from the AA, BA boards, I often see no new updates or only a fraction of the threads that I later see to have changed if I visit the forum normally.

Is there something wrong or am I just doing something wrong?

(I'm using the IE7 reader.)