Google now Searches your “Social Circle” too
Try searching for any term on google (while signed in) and you'll see results from your Social circle toward the end of the page.
Google knows your social contacts from you gmail address book and searches for content created by your friends.
From Google: If you're signed in ...
How to monitor Adsense clicks in Google Analytics
Google Analytics can be used to track/monitor Google Adsense clicks and earnings too. Assuming that you have a working google analytics account, here's how to go about linking both your accounts for Adsense analytics:
There should be a link in your Adsense account inviting you to ...