This month marks the one year anniversary of the AdMob Mobile Metrics Report, our monthly snapshot of the handset data we see from the billions of ads we serve each month.

AdMob’s network has experienced explosive growth in the past year, more than tripling in size.  When we put out the first Mobile Metrics Report last summer, AdMob had just celebrated serving the 5 billionth ad in our history, and this past month alone we served nearly 5 billion!

This growth has truly been worldwide.  Take a quick look at the list on page 3 of report at the growth by countries.  We found it particularly exciting that of the Top 20 countries in this month’s report, 15 of them had their traffic at least double from September 2007 to September 2008.

The iPhone has been a big part of the mobile growth story over this past year, with a real spike in the last couple of months. We see consistently strong usage of this popular device across all of the markets it is available in.  In fact, 40 percent of the 103m iPhone requests are from outside the US, with 14 countries – including Canada, the UK, Japan, and France – sending more than 1 million requests in September 2008.

This international strength is why the iPhone is higher in the worldwide rankings (#4) than in the US (#7). We know there continues to be a lot of interest in the iPhone and will provide a geographic breakout of iPhone traffic in the coming months.

Visit www.admob.com/metrics to download any of the AdMob Mobile Metrics Reports from the past year or send an email to metrics@admob.com to sign up for the monthly email distribution list.

We love to get feedback, so send us an email and tell us what you do or don’t like about the report.

Jason Spero
VP Marketing