I've been using Google Reader as my main RSS reader for some time. For the most part, I'm pretty happy with it. They've recently added the ability to share items, which makes it far more interesting. The one thing I'd love to see though is the ability to add local comments on those shared items, comments that only my friends could see. So many times I've read items in my friends' shared feeds and really wanted to say something, or get clarification. Going to the real site and posting a comment sort of implies a certain level of knowledge on my part (especially if it's a technical discussion). ...