Google Reader Backlash: A Fuss Over Nothing? - Rebecca J. Rosen - Technology - The Atlantic

But for people who used Google Reader's sharing features, the upgrade is a big loss, for all intents and purposes ruining that aspect of Reader. The old sharing methods have been totally supplanted with Google+ tools, which, quality aside, are too different to satisfy the same needs. I'm going to dive into the nitty-gritty here, so consider yourself warned.