On logging into Google Reader just now, I noticed that it now shows me a group of feeds that correspond to my friends’ shared items. This is terrific! Note: Friends are defined as your Google Talk buddies.
There is a Facebook app that works similarly, but I’m glad this functionality is now built in and is opt out, not opt in.
Note: I don’t consider this a privacy violation. You are ALREADY sharing these items with the public – Google is just making it easier to find your friends’ feeds.
I’ll look into adding this functionality to ReaderMini.
It looks like they announced a couple of days ago, but I don’t remember seeing it before today.