Google announced a new tool today that will allow users with Google accounts to see all the various data the company keeps about them and to edit or erase some (not all) of that data.
According to Google, you'll soon find a link to Google Dashboard in the "personal settings" of the "my account" page.
The dashboard will contain:
"some of the information associated with the Google services you use: your name, your email address, the number of contacts, the number of conversations in your Gmail ...