Wall Street Journal: Comcast is said to be in talks to acquire television ad-targeting company Visible World. Such a move would thrust the cable giant into a stronger position in the burgeoning market for data-driven TV advertising. New York-based Visible World has long helped advertisers deliver ads to specific audiences and households based on zip codes, using data from cable set top boxes and other sources. In 2013, the company rolled out AudienceXpress, a subsidiary whose software tools help marketers buy TV ads the way they do online.