New Yahoo CEO Marissa Mayer, who had previously been a key player at Google, sees mobile devices as central to re-energizing her moribund company. And the new version of the Yahoo app is definitely a positive sign of good things to come. Just released today, the new version lets you quickly scan your favorite news topics, while training it to find those items of greatest interest. If this sounds familiar, it may be because these features characterized the very popular Summly app, which Yahoo purchased less than a month ago. The company has now integrated the features of Summly into Yahoo.