Just a refresh topic about feeds here at the forum, as there are several ways to stay connected to conversation.
First, there is the super duper forum feed which has the most recent topics across all boards. Just copy and paste the web address into your feed reader of choice, like Google Reader.
You can also subscribe to feeds per message board or per individual topic. If you scroll to the bottom of each forum/topic page, you'll see a grey bar just above the footer. You'll notice a "subscribe" link to the left...clicking this will mark it as a topic to watch, which means you'll get an e-mail notice whenever there is an update made.
If you're interested in feedback on a topic that you're watching, this is a great way to keep in the loop.