For the most part, I think that Google's crackdown on pseudonyms and anonymity is actually a good thing. In most cases, anonymity online brings out the worst of us—just look at 4chan, littered with mobs of minions proliferating senseless hacking and child pornography[1]. You need but look at the news lately to see the damages of unchecked anonymity: "LulzSec this," "Anonymous that" and so on. Enforcing real names is…
People love to bring up 4chan as an example to this discussion every time, and yet there is no one on 4chan who has not freely chosen to be there. All this "know who you are talking to in order to have a friendly community" stuff is nonsense. We know why Google and Facebook and the Obama administration want this. Control and tracking. End of story.
Additionally, as a member of the Google+ community, I'm glad to see Google cares for its quality.