Google is a privacy monster. They scarf up private information and don't have great policies for how to deal with it. Their practices have mostly been good, but their policies mostly suck. The difference matters if you were to ever end up in dispute with them.
Recently, they released
Google Dashboard. Google Dashboard lets you see all of the information that they have associated with your Google account.
When you log into your dashboard, it lists all the accounts that you have, your transaction history for each account and your personal data for that account.
Well, not all the data. Google Checkout isn't included yet, for example. But still, it is a great way to do things.
I think it is a brilliant example of how to handle privacy. Imagine if you could log into gov.au/dashboard and see all the data for the different government departments. Or even yourbank.com.au/dashboard and find out which bit of the bank keeps sending mail to your old address.
For dealing with this aspect of privacy, I like it. I still think their policies mostly suck, though.