admobmobileexample.pngAdmob, a company that delivers ads to cellphones, has expanded in part by selling ads for other mobile services such as IM chat. It is now selling ads on Facebook. These ads will appear on mobile applications that use Facebook’s mobile platform.

Admob (previous coverage), based in San Mateo, Calif., may help Facebook applications gain users faster — by showing ads to cellphone users that try to lure them.

In the non-mobile world, many third-party ad networks on Facebook make money selling ads on applications that advertise other applications, which helps them gain users.

Admob claims its serves more than 1.5 billion ads a month globally.

As both Facebook and mobile web browsing becomes more popular around the world, the value of this market will increase.

However, we’ve heard from Facebook application developers, like RockYou for example, that mobile applications work better for monetizing existing web applications than they do for gaining new users — at least in the U.S.

Developers can check out a sample Admobile mobile application here and there’s a sample image at left.

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