Training BLOGS

Someone on BT told me once how to copy the RSS file from other BLOGS and save them somewhere in Google Desktop or Reader I think. And be able to just run my cursor over them to see if there are any updates. I just don't remember who or when so I could look it up. Does anyone know how to do this, it would save me some time at work and I could still stay productive at work and on BT.

Thanks All,
Adam