Telecoms technology company Ericsson has expanded into the mobile advertising business. It's launched AdMarket, an open, global market for buying and selling targeted mobile advertising. Network operators and content publishers will be able to use AdMarket to deliver advertising on mobile websites and other digital properties, enabling consumers to receive targeted advertising on their mobile phones. AdMarket promises to be a 'one-stop-shop' that handles technology requirements, relationships and settlements for the entire mobile advertising ecosystem.