Google's (or your?) Social Circle

We have been hearing that Google is trying to build some social networking features over its existing infrastructure. Google's CEO has also mentioned that they are not trying to make another Facebook or another social media website. Here is a sneak peak of what Google  is trying to do in the social media area : Social Search. As more and more people get connected to each other, what people read and recommend online will become a critical part of Google's search algorithms. We've always thought of what Google knows about us. If you have a Google account, please visit this link http://www.google.com/s2/search/social#socialcircle to see what Google knows about your social circle. Many ads that we see in our Gmail inbox or even through Google search are irrelevant. Imagine the power of ads based on recommendations and online behavior from your friends. This will not only be a big plus for the online searchers but also for a great revenue source for Google as it improves its click-though rate for ads. This will be put them in a good position against Facebook who, if the rumors are true, is going to launch email service next week.