"You can read RSS/Atom feeds through desktop applications, browsers, email applications…you name it. The challenge is that most of these feed readers require you to pick one method and stick with it. If you’re in a feed-reading mood and you’re not at the computer that has that desktop application or a full browser, then what?" 
Since it is now pretty easy to do all your RSS reading on the web, the separate feed reader application is becoming less and less needed. My favorite of the web based methods mentioned in this article is NewsGator. The ability to stay synchronized across web browsers makes life very simple.