According to mobile ad network Millennial Media
's July 2010 Mobile Mix
, BlackBerry apps, representing 11 percent of the U.S. Developer Platform Usage Mix (the apps on Millennial's network), experienced their largest growth month-over-month in July, at 9 percent. And with a 16 percent impression share, RIM was the third largest OS on Millennial Media's network, after iOS and Android -- RIM ad requests increased 18 percent month-over-month.
The full report is available here