www.google.com/reader

Google Reader is a Web-based aggregator, capable of reading RSS feeds online or offline. This RSS reader requires a Google account.

Here’s how to subscribe to feeds:
1. If you know the address of the feed to which you want to subscribe, you can just click on the "Add Subscriptions" link and paste the address in the text field that appears.
2. Otherwise, the Google Reader directory offers a way to find and add feeds.

How to choose an RSS Reader?

What is RSS?