What is the “RSS feed for this topic” there for?
RSS is a way to receive syndicated content in a reader. One of the most popular is Google Reader.
The real advantage of RSS is that it brings the content you want to you. For example, I subscribe to well over 100 blogs. If I wanted to read them all, I would normally have to go to every site every day. An RSS reader, however, brings all of them to you in one place.
Each thread in the CR (as well as the CR in general) has an RSS feed. So, you can follow the CR in your RSS reader without having to actually come to the CR.
The Wolf