What does Google know about you?
Or at least, what does it think it knows about you?
Have a look at this page:
http://google.com/ads/preferences
Take a look at updates to Google Social Search. The new improvements enable you to get even more information from people you are connected to, whether they’re publishing on Twitter, Flickr, Blogger or other publicly available sites.
According to Google, when you sign in to your Google Account, you can get ideas and recommendations from people you trust, right in your search results. It’s all part of Social Web Transformation. The Social Interest Graph.