Google says these phones can handle standard AdWords ads and landing pages without requiring modification or other special action by marketers, and it believes extending advertisers' reach in this way only makes sense. "Last year, we released a metric that the iPhone delivered 50 times the number of searches any other mobile platform [did]," said a Google spokesperson. "A lot of people are searching on these things."

Additionally, AdWords advertisers can create campaigns targeted exclusively to iPhone and G1 owners. Separate calls to action can be created for all mobile users, or even for the users of individual devices.

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