When you use Google and its many services, how do you identify yourself? According to Google blog, there are a few options: you can be unidentified, use a pseudonymous or be identified.
But there’s far more than that. As someone said, your online identity is determined not only by what you post, but also by what others post about you – whatever it is. When someone googles you, the SERPs are a mix of all this.
As far as June 2011 Google released an improved Dashboard page in order to manage as precisely as possible your web reputation.
Moreover, from the Dashboard you can access and manage pretty much every existing Google service: Analytics, Calendar, Docs, Gmail, Groups, Maps, Picasa, Reader, Youtube, Chrome sync, Adwords, navigation history and so on.