For your profile properties, such as your email address and so on, you can opt to who rhub will show the property to.
For each one, select one of: public, contact, friend, or private.
Private: No-one can see it, but rhub stores it and may use it internally, e.g. forwarding you message to your MSN Messenger account
Friend: Contacts you have tagged as a friend can see the property
Contact: Anyone you've designated as a contact can see the property
Public: Anyone can see the property
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