The Identification and Social sections of Instance Settings are smaller than some of the other sections, but contain important settings for some virtual instances. Both are top level tabs of Control Panel → Configuration → Instance Settings.
The Identification section has several links for addresses, phone numbers and other contact information for the organization that owns the instance. Developers can query for this information in their applications.
The Social section configures Ratings and Mentions throughout the instance. For each portlet with ratings enabled, choose whether to use a simple Like, Thumbs, or Stars for rating the content. You can also choose whether Users can mention (@Username) other Users, and if so, whether all Users can do that or you want to further refine the mentions configuration.