News Corp.'s Wall Street Journal introduced new properties for a year-over-year increase in circulation of 12.3% in March, according to Alliance for Audited Media, leading it to the top of BtoB magazine's 2013 Media Power 50. Google turned B2B interest in its display, search, mobile and video platforms to increase revenue 32.4% over last year, earning the No. 2 spot from BtoB. And LinkedIn's addition of Targeted Status Updates and SlideShare Content Ads helped the business social network jump from number seven into third place.
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