I'm not sure why I wasn't aware of this until recently, but if you use Google and any of its way cool tools (gmail, iGoogle, Alerts, Reader, etc.), and you want to know info is associated with your account, check out the Google Dashboard. You can use this to manage this information, change privacy settings, and just know how you've used these services. All you have to do is log in with your Google account, and all the info is at your fingertips.
While I do have a lot of faith in Google, it's always good to know that you can manage your privacy to some extent.