We also retain the right to create limits on use and storage at our sole discretion at any time. We may also remove or refuse to distribute any content on the services, suspend or terminate users, and reclaim usernames without liability to you.</p> Who May Use the Services Individual Use <p>You may use the services only if you agree to form a binding contract with Hypothesis. In any case, you must be at least 13 years old to use our services, unless you obtain consent from a parental authority (i.e. parents, guardians, school teachers, etc). Those under the age of 18 are encouraged to discuss with their parents or teachers before using our services.</p> Commercial Use <p>If you are using or incorporating Hypothesis hosted annotation services (as distinct from our openly licensed code) within a commercial offering or entity, be it free or otherwise, you will need to contact us and enter into a formal business agreement.</p>