Will I be contacted if I participate?
Yes. The information that we collect about how you are using our products and services helps us to personalize your experience, so that you get the most value from Office 365. To do so, we may target specific messages to you via e-mail or other marketing channels (display advertising, in-product notifications, etc.) that will help you to realize the full potential of the service. We will do our best to ensure that these messages are timely and relevant, but you have the ability to opt-out of the program or unsubscribe from our e-mail communications at any time.
Note: Microsoft is a member of the Anti-Spam Technical Alliance, an industry group that includes other companies such as AOL, Yahoo, EarthLink, Comcast, and British Telecom. This alliance is actively seeking to reduce unwanted e-mail messages.
More on Microsoft's anti-spam efforts can be found
in this online progress report