Leading all smartphone operating systems, Android accounted for nearly half of all mobile ad impressions shown last month, according to a new report from Millennial Media. "Measured on that basis, 14
of the top 20 devices run Android, though the iPhone still tops the list and the BlackBerry Curve is the second most common phone model," notes All Things Digital's Mobilized
blog. However, in terms of app
revenue by platform, the numbers are largely reversed, with iOS apps generating 47% of revenue -- compared to 36% of revenue generated by Android apps. Meanwhile, BlackBerry apps accounted for 7% of
sales, while WebOS, Windows Phone, Symbian and other operating systems combined for a mere 10% of app revenue. Also of note, non-phone devices such as the iPad, iPod Touch and Galaxy Tab are seeing
strong ad growth as well, reports Mobilized.