Advertisers will start shifting toward Facebook "HOME" and Mozilla/Samsung new web browser, this year will be very tough for Google on the ads revenue side.
Technology keep changing, and it seems more and more companies are pulling the carpet on Google, as Google did to Yahoo and AOL in the past, here is one analyst view (Horace Dediu):
"Facebook is inserting itself between users and Google, diverting them to the social network's own ads and services. It's taking advantage of the fact that Google places few restrictions on how phone manufacturers and software developers modify Android. By contrast, Facebook Home would not work on the iPhone without approval from Apple Inc., and close collaboration with the company. Facebook Home can only reside on Android because only Google was daft enough to allow it."
The Firefox OS is, like Android , a Linux OS. But the Firefox OS is pure interoperability through the web browser and HTML5. The Firefox OS is the future of mobile computing and spells the end of the era of 'apps' for Android or Apple devices.
It's also the end for Adobe Flash, as HTML5 provides and efficient cross platform method of playing audio and video.