New York Post: Looking to lure advertisers with richer insights about its fickle teen users, Snapchat has quietly cut deals with a slew of data-savvy marketing firms, including Datalogix, Epsilon, Acxiom and BlueKai. Coupled with Snapchat’s geolocation features, these firms can deliver troves of information about Snapchat’s users, including what they’ve been buying, watching and downloading on their phones.