I saw this post that mentioned feedly. This looks like a interesting Firefox chrome application. feedly presents you a start page that summarizes your content from Google Reader. feedly also integrates with various social network sites to allow you to share content that you read.
I don't know if I will use feedly regularly for reading content, as Google Reader already has a good summary view. I do like, and will continue to use, the interface that feedly offers for subscribing to feeds. On one page, you can subscribe to and tag new feeds. Since feedly relys on Google Reader as the backend, all feeds subscribed to in feedly are actually subscribed to in Google Reader.
I am interested in what they do with the social aspect of feedly. It seems that feedly could enable other ways of sharing content, or discovering new content.