This Agreement is subject to occasional revision, and if we make any substantial changes, we may notify you by sending you an e-mail to the last e-mail address you provided to us (if any) and/or by prominently posting notice of the changes on our Services. Any changes to this agreement will be effective upon the earlier of thirty (30) calendar days following our dispatch of an e-mail notice to you (if applicable) or thirty (30) calendar days following our posting of notice of the changes on our Services. These changes will be effective immediately for new Users of our Services.