I've used Google Reader for several years now and recommend it to my friends all the time. There are other really neat features that I'm sure @40tech will cover in the future.
By tagging items specifically, I'm also able to share them out to different audiences depending on the topic. For example, I write a blog about Hurricanes and can have specific Hurricane related news items shared automatically to it by tagging the item appropriately and integrating the Google Reader sharing feature on that blog. http://mcgarrett50.blogspot.com/
I also like the new “Send to” feature where each item can be sent individually to a variety of destinations ranging from Facebook to Evernote to Gmail.
Look for Google to continue to enhance the current features, add more, and find additional integration points to other Google products. Nice post Evan!