Motorola's Droid continues to propel the Android mobile operating system forward in the stat arena, with the latest data crediting the handset with nearly a quarter of all Android traffic.

AdMob, a mobile ad firm that serves display and text ads on about 15,000 mobile Web sites and applications, releases monthly trend reports based on the traffic on its network. AdMob is also in the process of being acquired by Google (NASDAQ: GOOG) for $750 million, underscoring the future potential of mobile ads.

While Apple's (NASDAQ: AAPL) iPhone typically dominates the AdMob network traffic, the October report reveals some gains by Android, most notably ones made by Motorola, and Research In Motion's BlackBerry devices.

With the Google-backed Android OS starting to come of age with several major upgrades and signature smartphone releases, worldwide requests from Android devices increased 5.8 times since April 2009 in the AdMob network.

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