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Do you mean the Mountain Lion integrated Facebook access? If you open System Preferences and look in Mail/Contacts&Calendars there is an entry there for Facebook. Just click that and enter your Facebook credentials and it will turn on Facebook integration.
 
Do you mean the Mountain Lion integrated Facebook access? If you open System Preferences and look in Mail/Contacts&Calendars there is an entry there for Facebook. Just click that and enter your Facebook credentials and it will turn on Facebook integration.

Sorry I tried this but it's still not back on launch pad.
 
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