A few months ago, we wrote about mobile ad network Greystripe’s study that placed “iPhone moms” (mothers of young children who own iPhones) as one of the new and growing mobile advertising demographics on the street. In August, Greystripe claimed that iPhone moms made up 29.5% of all iPhone users. Today, the ad network is releasing a follow-up report which offers detailed behavioral characteristics of moms in their iPhone ad network. Similar to the “soccer moms” demographic, iPhone moms are a consumer segment that has vast potential for advertisers and app developers.

The report shows several interesting patterns. For example, over 59% of iPhone moms surveyed say they let their children use their iPhone. And 41% of moms who own iPhons download apps specifically for their children to use.

Greystripe, the mobile brand and game advertising network has secured $2 million in an extended series C funding round from General Electric and NBC Universal’s Peacock Equity Fund. The startup originally raised $5.5 million in the series C round in March from Disney’s Steamboat Ventures, Incubic Venture Capital and Michael Chang tells us that the most recent funding will be used to expand the company’s sales team and efforts to work with publishers. Greystripe capitalized on strong growth in its mobile content distribution and monetization business, particularly with the iPhone.

According to a recent study done by mobile ad network Greystripe, there’s a relatively new mobile advertising demographic on the street: iPhone moms. Similar to the “soccer moms” demographic, iPhone moms could be a new consumer segment that has vast potential for advertisers and app developers. Greystripe says that “iPhone moms,” which constitute women (with children) who own iPhones, currently make up 29.5% of all iPhone users.

Greystripe says that in the past, “soccer moms” has not been a group that advertisers
could reach through mobile applications because they tended to be late adopters. I’m not so sure about this assertion, considering the rapid growth of “Mommy bloggers” over the past few years. But as the iPhone becomes central to moms to manage finances, family budgets, to-do lists and vacations, it’s sure to become a valuable and portable personal computer and too for the Mommy demographic. There’s even a blog that’s popped up devoted to iPhone Moms. And Moms use the iPhone not just for themselves, but to download kid-friendly apps for their children to use.

Google is moving into the mobile ad market with AdSense for mobile apps. Over the past few months, Google has been testing both text and graphical ads with ten mobile app developers, including Shazam and Urbanspoon. Today it is opening the private beta to more developers who meet certain criteria.

These are contextual ads for iPhone and Android apps. To qualify for the public beta, the apps must be free and generate at least 100,000 pageviews per day. The program is only for iPhone or Android apps. Developers must be ready to go live with the ads in four weeks and participate for three months.

There have been questions as to whether iPhone developers can make significant revenue from ads on the iPhone, mainly because the supply of advertisers can’t keep up with the demand for iPhone apps. Others say that developers actually can make quite a bit from ads on free apps. Mobile game advertising network Greystripe is in that camp and it is launching a new CPM Protection Program designed to guarantee ad revenue to iPhone app developers.

Greystripe says that the various mobile ad networks, including competitor AdMob, are undercutting each others’ CPMs (cost per thousand impressions) when competing for advertising dollars, thus leaving iPhone app developers with lower CPMs overall. Greystripe’s CPM Protection Program offers to beat any other ad networks’ eCPM by at least 25% for 60 days.

Mobile game advertising network Greystripe secured $5.5 million in Series C funding led by Incubic Venture Capital, Steamboat Ventures and Monitor Ventures. The company previously received a total of $10.1 million in Series A and B funding, with the same investors participating. Greystripe develops “advergames,” mobile ads that have game-like characteristics designed to increase the chances of consumers clicking on them. Greystripe has delivered 180 million ad-supported game and app downloads to date.

Greystripe has capitalized on strong growth in its mobile content distribution and monetization business, particularly with the iPhone. Greystripe is now trying to integrate mobile-centric ad campaigns with industry-accepted online media buying software. This unified integration allows for ad agencies to easily add mobile ads with one click and also allows for Flash advertisementsto appear on the iPhone (a technology that Greystripe developed). Ads can be used for both online and mobile purposes.

Mobile game ad network Greystripe has hit 140 million ad-supported game downloads thanks to iPhone users. In the fourth quarter of 2008 alone, it supported 30 million downloads. All of these ad-supported and Greystripe says that over 50 percent of ad impressions are from iPhone games. The ads themselves have game-like characteristics designed to increase teh chances of consumers clicking on them and playing with them, hence “advergames.”

Last summer, TechCrunch reported that Greystripe turned its attention to the iPhone, and is subsequently seeing an increase in downloads and ad impressions. In fact, Greystripe’s Top 10 Total Games (by ad impression) are all iPhone games. In December, the company created its own version of Adobe Flash for the iPhone, which Apple currently prohibits on the iPhone, that would allow advertisers to use rich media flash ads. The company is making the iPhone market a “priority for the foreseeable future,” finding that the device is a much more successful ad platform for gaming than Java devices.