Aside from the key features we just listed, Google Reader has more important features that make it stand out from the other web aggregators available online.
One of these features is Google Readers Sharing feature. This feature used to be done through email but as Google Reader evolved, you can now share items automatically to your Google contacts.
Then through the use of its Gears tool, Google has also enabled Offline Access for Google Reader. This answered the request of many who access their Google Reader account on a computer with slow internet speed. This feature allows you to download up to 2,000 feed items that you can read offline. The feeds automatically updates the next time you go online.
Google Reader also has a mobile interface that supports XHTML or WAP 2.0. In addition there is also an existing native Google Reader app for the iPhone aside from the mobile access embedded on the Google Mobile app.
Google also lets you discover new feeds to subscribe to as well as add notes to share items, easily.