Aren't you a little bit curious about what information Google collected about you?
Well, you can stop wondering and check out the new Google Dashboard, a privacy tool that will give you an overview of the things Google learned about you through your use of its products.
Your name and e-mail address, where you live, your contacts, the documents you worked on and shared, your e-mail correspondence and people you talked with through Gmail, the tasks you wrote down - they are all there.
The Dashboard includes data gathered only from Google services that you access with your Google account (Account & Profile, Alerts, Blogger, Calendar, Contacts, Custom search engines, Docs, Finance, Friend Connect, Gmail, Health, iGoogle, Latitude, Mobile Sync, Orkut, Picasa, Reader, Shopping List, Talk, Tasks, Voice, Web-history, YouTube). For cookie-based data you should check out the Ad Preference Manager.
Here is the demonstration video of how the Google Dashboard works:
If you'd like to know more about what kind of information Google knows about its users, check out this book - Googling Security: How Much Does Google Know About You?.