Developers looking to attack mobile app segments where they might have the best chance of scoring big with smartphone users would be well served to take notice of Nielsen’s latest findings. The market research firm on Wednesday published some findings from its Mobile Insights and Mobile Apps Playbook reports for the second quarter of 2011, and “Games” was once again the most popular app category. In the second quarter, 64% of app downloaders — smartphone users surveyed who had downloaded...

The Apple App Store, unsurprisingly and without much fanfare, passed the 150,000 application milestone this week. The world’s largest mobile application store, which contains over 27,000 books and over 28,000 games, has generated well over 3 billion downloads since its inception in July of 2008. Back in December 2008, when O’Reilly examined the App Store landscape, they calculated that 22% of the then 10,000 applications were provided free by developers. Today, according to analytics company Disti...