1. Use information to provide our users with valuable products and services. Search history informs personalized search, but users can opt-out.
2. Develop products that reflect strong privacy standards and practices. For example, you can chat on Google Talk "off the record" so the conversation isn't saved.
3. Make the collection of personal information transparent. Last year, the Google Dashboard was launched to show you what info Google is collecting on you.
4. Give users meaningful choices to protect their privacy. You can report privacy issues related to Street View. Google often blurs faces, for example.
5. Be a responsible steward of the information we hold. Google doesn't sell data to other companies.

You can view the published web document on Google's privacy principles here.