So Google is taking another stab at social networking, with Google+. My first thought was, does it have a federation protocol? Frankly, without federation, Google+ is so... last decade.
Of course, expecting federation in a Google product is kind of ridiculous. Federation gets in the way of what Google does best: mine data. Enabling a distributed system would not be in Google's best interest.
Which is unfortunate because it means Google has lost the perfect opportunity to create a next generation social networking system. Instead, they gave us Facebook with round corners and bevelled edges.