Digital ad company OpenX acquires LiftDNA

Ad company OpenX, which helps publishers and enterprise companies sell valuable ad space, said today it has acquired LiftDNA, which helps find untapped ad sources and track how much money publishers make off of ad campaigns.

Google acquires Invite Media to help users with ad exchanges

Google has reportedly purchased the startup Invite Media for around $70 million, according to All Things Digital. The company is a “demand side platform” (DSP) that helps ad buyers navigate advertising exchanges like Google’s AdX service.