The personalized marketing platform gained four million customers in the last six month to put it past the new milestone just 2.5 years after launch. O2 Media said the growth was attributable to a number of market drivers. Firstly, the growth of the smartphone market and what consumers want to do on their devices is rapidly changing. Secondly, it said that customers are learning that a rich media platform combined with location, preferences and unique offers mean they can benefit from everyday offers or information that help their daily life.