Subtitles section Play video Print subtitles Smartphone－usage is， of course， becoming more prevalent throughout the world，... and the mobile advertising market is a sector that has been profiting from that growth. But…some warn of developments that may end up ′lowering′ the boom. Kim Min－ji reports. The global mobile advertisement market is reaping the profits. According to a joint report by IAB Europe and IHS Technology，... the revenue from the global mobile advertisement market amounted to 31－point－9 billion U.S. dollars in 2014. That′s up nearly 65 percent from the previous year. By segment， mobile display generated nearly half of the total global mobile advertising revenue，... or 15－point－1 billion dollars， followed by mobile search with 46 percent at 14－point－7 billion dollars，... and messaging with seven percent share，... or 2－point－1 billion dollars. The North American region accounted for the biggest proportion of the market at about 45 percent，... or 14－point－3 billion dollars. It was followed by the Asia－Pacific region at nearly 37 percent，... and Europe at about 17 percent. However， posing a possible threat to the market，... a separate report says ad blocking software could cost online publishers losses of over 20 billion dollars in revenue this year. Currently， nearly 200 million people worldwide are using ad blockers online an increase of more than a 40 percent from June 2014. The report warned of a ′game changer′ this fall when Apple launches its iOS9， a new mobile operating system which will allow the development of ad blocking apps supported by Mobile Safari which currently makes up more than half of the global mobile browsing market. Kim Min－ji， Arirang News.