Well, I've read their entire TOS and Privacy Statement before I commented.

So that we can provide the Service to you, you will be required to provide information about yourself such as your name and email address. Any such information you provide to Canonical must always be accurate, correct and up to date and in compliance with these Terms of Service.

The information collected may include statistics relating to how often data is transferred, and performance metrics in relation to software and configuration. You agree this information may be retained and used by Canonical.