Smaato, Inc, a mobile ad optimization platform released their results of its latest mobile advertising report. According to the report, Windows Phone leads iOS, Android, BlackBerry and Symbian in click-through rates(CTRs) both in the U.S. and worldwide. Its also important to note that Windows Phone tops these charts for 2nd consecutive quarter. This should be an encouraging news for Windows Phone developers who depend on advertising as their mode of monetization. More on the report over at Techcrunch.