[{'role': 'user', 'content': "Analyze the following clause from a privacy policy and determine if it's fair or unfair. Also identify any privacy practices mentioned: Terms Modification. Dropbox may revise this Agreement from time to time and the most current version will always be posted on the Dropbox Business website. If a revision, in Dropbox's sole discretion, is material, Dropbox will notify Customer (by, for example, sending an email to the email address associated with the applicable account). Other revisions may be posted to Dropbox's blog or terms page, and Customer is responsible for checking these postings regularly. By continuing to access or use the Services after revisions become effective, Customer agrees to be bound by the revised Agreement. If Customer does not agree to the revised Agreement terms, Customer may terminate the Services within thirty days of receiving notice of the change."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_E_Mail_Address_1stParty.'}]