Looks like Google added a feature to track your friends shared items. It's not quite working for me yet though

http://mirror.pb30.com/images//Dock-20071214-193245.jpg
http://www.google.com/reader/view/user/-/state/com.google/broadcast-friends

I have the same thing.

http://www.google.com/support/reader/bin/answer.py?answer=83041&topic=12016
http://www.google.com/support/reader/bin/answer.py?answer=83000&topic=12016

http://mirror.pb30.com/images//Dock-20071214-194428.jpg

They also seem to have Google Profiles which are integrated: http://www.google.com/help/profile/

It doesn't seem possible to choose who can see your shared items which is annoying.

Yipee!

I've got an example picture with mine
http://mrrix32.googlepages.com/reader.PNG