What role do ad networks play in the spread of mobile malware? That's something I would want to read more about. Are the "big boys" like Millennial Media, Admob, Flurry, etc. taking enough steps to keep the spread of malware to a minimum. The one ad network that I know has done a lot to curb mobile malware is Airpush ( http://www.examiner.com/article/airpush-raises-the-bar-on-security-for-mobile-ad-networks ), I just think more should be done, even though this article once again suggests that the threat of mobile malware is overblown. I don't think it is.