The PC must be so boring right now. Almost all the noise from high-tech leaders Microsoft (MSFT) and Google (GOOG) centers around the burgeoning fight the two have in the mobile handset space. Add Apple's (AAPL) iPhone dominance into the picture and mobile is quickly becoming the next battleground for ad-related search revenue, now that Google has effectively won the market for ad-based search revenue on the PC.

Google (GOOG) could be the ultimate slight-of-hand tech company or one that intends to base its entire business model -- forever -- on advertising revenue. Which is it? Hard to say, as the company's moves into the wireless hardware, high-speed Internet and telecommunications industries has many an entrenched company paying close attention. The fact that Google's Android mobile operating system is selling 60,000 Android smartphones a day is nothing to dismiss. What are the company's exact intentions, though?

Google's (GOOG) future ambition: to conquer the mobile ad world just like it has the World Wide Web world.

Although there is much convergence between the two, mobile devices are replacing PCs for much of the world's Internet activity (it's tiny now, but exploding more every year). To that end, Google's Android mobile operating system, which is now taking the world by storm, wants to be the clear leader in mobile Internet and application access.

Japan's largest wireless operator, NTT DoCoMo, Inc. (NYSE: DCM), will be joining with the world's leading internet search company to provide advanced services to its customers. Google Inc. (NASDAQ: GOOG) will help NTT customers find what they want on the web through a promotional effort that aims to boost mobile search as well as generate revenue with search-related advertising.

In a country where much of the mobile subscriber population regularly accesses the internet through millions of cellphone handsets, this is a significant development. But it's not just because Google has partnered with a global wireless carrier -- it's because the partnership referred to search-related advertising explicitly.

One area that Google must treat carefully with new wireless partnerships is its ability to monetize its search service within the confines of a smaller screen. The company made its fortune supplying relevant but relatively simple text ads to web surfers, so it already knows how to reach customers successfully in another medium: supply relevancy and quality without taking away from the search experience.

Google Inc. (NASDAQ: GOOG) just recently launched its Google Calendar for mobile phone usage (as of last week). Sounds pretty boring, right? Well, to most of us, it is. Google, however, sees the future of where people will be getting information from, and it's not the PC. You see, there are quite a few more mobile phones on the planet these days than PCs, and in more markets (except the U.S., yet), customers are using those nice, color mobile screens and higher-speed cellular networks to check e-mail and browse information (not necessarily websites). As such, Google knows that getting its brand in front of customers in that arena is a key move to its future.

Yahoo! Inc. (NASDAQ: YHOO) has not sat still either. "Yahoo! Go" is now being downloaded to cellphones, Treos and BlackBerrys in large amounts, putting the entire Yahoo! portal in front of millions of wireless phone subscribers who still need Yahoo!'s services when away from a laptop or other PC. Similarly, Google Calendar for mobile phones is yet another example of the company making many of its products available for cellphone use.

This is significant because as Google customers begin using its services on those hundreds of millions of phones, Google's advertising finesse could, at some point, reap even more revenue from mobile customers. Google already is playing with mobile advertising and if it can recreate (even partially) the success of its online advertising in the mobile phone space, another mold will be broken. In fact, it will be interesting to see if the same kind of battle will shape up between Google and Yahoo! on the mobile phone screen as has happened on the PC screen.

Google, Inc. (NASDAQ:GOOG) is once again trying to get more customers using its venerable email service -- dubbed Gmail -- as the search giant has released a new mobile version of its Gmail client as a Java download for mobile phones as of today.

Although Google's Gmail service has been available for almost a year through the wireless web browser built into most cellphones these days, this is the company's first attempt at an actual downloadable and installable application (the app is a J2ME download) that is installable by visiting www.gmail.com/app on your mobile phone's wireless web browser.

Google execs have said many, many times in the last year that it believes the mobile phone has more potential than the PC for internet access in global markets. It's not hard to see why, since mobile phones are much more numerous than PCs in most countries these days.

Well, now it's got the goods and the masses have their cellphones. It's a marriage waiting to happen -- but the two first have to meet. The company's next challenge is getting the message out to the people. I've said many times that Google fails to properly market newer services as best it can -- only to see uptake falter after initial hype.