On the concept of ‘Terms of Service’

Via: Sirius XM (CAPITALIZATION-AS-SHOUTING from the original)

B. CHANGES IN TERMS AND SERVICE:
1. Changes To Terms

WE RESERVE THE RIGHT TO CHANGE THE TERMS OF THIS AGREEMENT AT ANY TIME. ANY CHANGES WILL BE EFFECTIVE UPON POSTING OF THE REVISIONS ON THE SITE REFLECTING THE NEW EFFECTIVE DATE. YOUR CONTINUED USE OF THE SERVICE FOLLOWING THE POSTING OF THE CHANGES ONLINE WILL CONSTITUTE YOUR ACCEPTANCE OF SUCH CHANGES. YOU SHOULD FREQUENTLY REVIEW THE AGREEMENT (INCLUDING THE EFFECTIVE DATE) AND APPLICABLE POLICIES FROM TIME TO TIME TO UNDERSTAND THE TERMS THAT APPLY TO YOUR USE OF THE SERVICE AND/OR USE OF THE SITE.