High-speed Internet access is recommended. You acknowledge and agree that such system requirements, which may be changed from time to time, are your responsibility.</b> </p> <b>4. Age Restrictions on Use of the Service </b> <p> <b>You may not use the Service if you are under 13 years of age. You represent that you are 13 or older, and that you will not permit a minor under the age of 13 to use the Service, your Prezi account, or otherwise interact with the Service.