Now you can target Facebook advertising & messages by email address at http://t.co/2gWkjVid
January 05, 2013
Advertising
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The Most Powerful Facebook Mobile Ad Feature Most Marketers Don't Know About Yet
In September 2012 Facebook announced a new targeting option called "Custom Audiences," which it mentioned in its earnings release but which not enough marketers and very few Wall Street analysts appear to understand. It lets marketers target their existing customers by doing a match with hashed versions of their opt-in email addresses.