[{'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: We do not offer you the opportunity to invite your contacts from a Sign-in Service so that those contacts can be located in our Services games and/or you can invite them to join you in our Services."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: SSO.'}]