Today in Mobile

A few pieces focusing on Microsoft’s Windows Phone 7 illlustrate today just how wide-open the smartphone market is: IDC has revised its projections to claim that Windows Phone will be the second-most popular mobile operating system by 2015, trailing only Android. But PCMag points out that carriers aren’t exactly breaking a sweat to support Microsoft’s platform, and Robert Scoble argues that a lack of apps is shackling Windows Phone. Things can change quickly in the space, as my colleague Ryan Kim points out here, but Microsoft and its partner Nokia have plenty of big hurdles to overcome if Windows Phone is to become a major platform.