How do I show my preferred method of contact on my profile?

1. Go Here
2. Under contact details, select the item from the box marked 'Preferred Contact Method'
3. Press Save

This feature does a little bit of checking, e.g. for your mobile number to be your preferred method of contact, you must opt to show it.  However, if you are showing your Phone Chat number or have DirectChat as your preferred method and untick 'Phone Chat Services' on the Registration Details page, these methods will no longer appear on your profile page at all, preferred or otherwise.