Dive summary: 

• Facebook has announced Partner Categories, the compilation of third party data from Acxiom, Datalogix and Epsilon that allows advertisers to target specific audiences. 
• Partner Categories is available through Facebook's self-serve Power Editor ad creation tool and through its ad API partners. 
• The new layering creates more than 500 new segments in addition to Facebook's traditional advertising. 

From the article: 

"Now advertisers can create ad-targeting parameters such as 'home owners who are retired, own a Ford pick-up truck, buy over-the-counter allergy relief medication and take cruises.' They can also target 'dentists who live alone, own a BMW and buy big-and-tall clothes and diet foods.' Or 'people who live in a million-dollar home housing four people including a military veteran.' Or 'mortgage borrowing homemakers who own a minivan and buy baby food.'”