Once you have registered, you can log in and modify your user Profile in your Locker, to how you like.
Depending on what you have entered in your user Profile will depend on what will be displayed to the public. eg. If you entered your facebook link, a facebook button will be automatically displayed in your public user profile which viewers can click on to go to your facebook page.
Here is an example of a user profile settings filled in.
This is how your user profile will be displayed in public.