Even if they trail Japanese and European mobile users in TV/video consumption, Americans sure are fond of interpersonal communication via handsets—overindexing the other groups in usage of instant messaging services and social networking sites and blogs, according to comScore. Not surprisingly, the Japanese easily lead their American and European counterparts in overall mobile media usage, including of browsers and apps alone, but it may surprise some to find out that Americans lead Europeans in those metrics. Even with a multiplatform content boom underway, US mobile customers still trail both consumer segments in adoption of TV/video viewing, although those with glass half-full mentalities could argue that the relatively low usage rate represents tremendous upside. As for demo-specific data covering US mobile media use, 25-34s lead all other age groups. More info below.