It seems Google is concentrating more on Mobile Applications for iPhones and Android-powered devices.
Recently, it has launched Gmail for mobile which improves Cache implementation in iPhone and Android-powered devices so as to make it tolerant of flaky wireless connections.
And also Google has released Beta version of AdSense for Mobile Applications for enabling the Developers to show the Targeted Ads in Mobile applications also.
For example, AdSense will show advertisements on Music app. based on user’s song list.
Mobile applications are becoming more popular and they help people to get music, make hotel reservations or check bank balances on their phone.
Google says “We want to contribute to the growth of these mobile applications, which is why we're happy to announce our beta launch of AdSense for Mobile Applications”
I am just thinking how Google is going to control/track/manage Genuine use of ads in applications.
If it is successful, I think they can implement it in Desktop based applications also in future. But I am not sure whether it is feasible or not.
Anyway, I hope adSense will encourage developers to create new applications and therefore people will get more free mobile applications.