According to a new report by Millennial media, Android ad requests grew 77% month over month in April, while Apple saw an 8% decline and RIM saw a marginal 3% increase. However, the report points out to an interesting fact that Silicon Valley and San Francisco in general are no where in the top 5 when it comes to mobile web browsing – at least based on the ad-requests metric.

Here are the top five American cities in terms of mobile ad requests

1. Los Angeles
2. Dallas
3. Houston
4. New York
5. Chicago

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