If mobile apps are all the rage, then mobile in-app ads are causing rage.

In one recent example, the popular franchise Angry Birds saw in-app ads added to its HD version, and fans and players were in an uproarover the change.

But like them or not, mobile marketers are turning more attention toward in-app advertising. Right now, in-app ads account for around 5% of mobile ad spending, and that number is only expected to rise over the next few years.

One of the reasons in-app ads are taking off is their effectiveness. In spite of the fact that the majority of 18-34-year-olds actively dislike mobile in-app ads, the majority will also be able to recall those ads at a higher rate than the ads they see while browsing the mobile web.

And for app makers, the ads are a good bet, too. After all, Angry Birds publisher Rovio says that by the end of 2011, it’ll be making $1 million each month from in-app ads on the Android platform alone.

While we’re hoping to see better in-app ads as the ecosystem becomes more sophisticated, it’s interesting to monitor in-app ads in today’s relatively nascent state. 

Article source: Mashable

Image courtesy of iStockphoto, DougSchneiderPhoto