More good news for Apple and not so good news for other smart phone makers. AdMob’s January traffic analysis credits Apple with a majority share of the American smartphone market and notes the iPod touch is rapidly gaining ground as well. The ad company’s latest Mobile Metrics report, which tracks handheld web traffic based on served banner and text ads says HDMI Cables, gives the iPhone a majority 51 percent share of smartphone requests handled in the United States despite the Apple device’s official limitation to a single carrier. In view of the entire U.S. handset market, of which smartphones represent a smaller growing sector, Apple devices left their competitors behind and trumped Motorola by almost 10 percent.