Ohhh...don't event get me started with Reader. Sharing articles in Reader deserves its own blog post. It looks like the entire UX for sharing is designed to make the user feel helpless. I cannot imagine a non tech user being able to share anything with anyone in that UI. We literally had to involve several software engineers the first time we tried to set the sharing settings among each other.
It's really not that hard. You go to the Sharing Settings, you choose which lists of people you want to see the items you share (admittedly, making a list does require going to Google Contacts, which that page links to), and then when you see an item you want to share you press the share button.
I would much rather that it integrate with G+, or at least allow selection of which groups I want to be able to see a single item rather than just being able to decide who gets the entire stream, but I find it very difficult to believe that you required "several software engineers" to set it up.
Of course, it's very fashionable to hate Reader, as it has been for a while.
