I’ve been trying Google Reader for the last couple weeks, and I really like it. The interface is very clean, and it’s taken very little time to get used to as my primary feed reading app. There’s also a mobile version, which renders very quickly on my Treo.
One nice feature is the ‘share’ button at the bottom of every item. Click it, and it’s automatically added to your Google Shared Items feed, which I’m now running through FeedBurner and using BuzzBoost to render the last 10 links on the sidebar at my blog. (Feed subscribers can subscribe to the feed.)