I've worked on adding some feed links for individual forums and even individual thread tags - you can get to them by clicking onto a forum page or thread icon page and then finding our RSS feed from there.
(Some may be missing now, but they should fill in as we go - hopefully. If you want to subscribe to one and it isn't there, please contact me with the forum or tag name and I'll figure out if anything's buggy with the new code)
I was just wondering if that was a new feature, or something that I hadn't paid attention to before. (Of course, since I haven't posted in something like 3 weeks until now, it could've just slipped my mind, too.)