Back in 2009, we wrote a story on crack mobile developer Larva Labs lamenting its inability to make a living off top-rated games in the Android Market. Well, to put it lightly, it ain't 2009 anymore: the Android ecosystem has expanded exponentially in every conceivable direction, the Market has taken on tens of thousands of additional apps, and -- according to one research firm, anyway -- Android has now overtaken BlackBerry to become the most prolific smartphone platform in the US.To that end, Spacetime Studios -- the company behind mobile MMORPG Pocket Legends, which brings in revenue through in-app purchases -- was shocked to discover that it's making some 30 to 50 percent more from its Android users than its iOS ones. Furthermore, they're spending more time playing and downloading the app with far greater frequency, which might be a testament to the fact that really great apps still stand out in the Market better than they do in the more mature (and more populated) App Store. The in-app purchase disparity is a little more difficult to explain, though -- especially since iOS has a slick, integrated purchase mechanism that Google won't be rolling out in Android for a little while yet. At any rate, the online mobile economy -- regardless of platform -- clearly still has some growing, maturing, and stabilizing to do.[Thanks, Michael]