We also obtain or infer demographic information, as well as profile photos if you choose to upload one. If you use Facebook or another service such as Google or WeChat to register for or log in to the Services (or later connect your accounts), you authorize Facebook or the other service, as the case may be, to share your personal information with us, including your email address, age and publicly available information about you and your Facebook friends, if you use Facebook for registering for the Services.