Of course, Microsoft (NASDAQ: MSFT) demonstrated the huge value of owning a pervasive operating system.

But what about the OS for mobile? Microsoft has been building its own alternative. Moreover, Google (NASDAQ: GOOG) has Android.

However, the winner may actually be the handset maker, Nokia (NYSE: NOK). This week, the company announced it is purchasing Symbian, which has about 60% of the global market for the mobile OS. The offer comes to about $409.8 million (to grab the 52% that Nokia doesn't already own).

But, unlike Microsoft, Nokia isn't taking a proprietary approach. Instead, Symbian is going to be open source.

True, this is likely to take some time (say several years), but in the meantime, Nokia can leverage its massive global platform by using Symbian's 1,200 programmers. The upshot should be improved innovation and faster product launches (oh, and there will be no need to pay licensing fees to Symbian).

OK, so what about rival handset makers that rely on Symbian, such as Motorola (NYSE: MOT), Sony Ericsson Mobile and Samsung? Might they be worried?

Perhaps, but then again, they realize the importance of having standardization. And by being open source, the handset makers have the leeway to add their own capabilities.

Tom Taulli is the author of various books, including The Complete M&A Handbook and The Edgar Online Guide to Decoding Financial Statements. He also operates MergerBook.com.

For the tech business people I know, there are two "must haves:" a BlackBerry -- Research in Motion (NASDAQ: RIMM)'s smartphone -- and a profile on LinkedIn, a social network that has 19 million members.

But, interestingly enough, the two systems haven't been able to talk to each other – that is, until now.

Today, LinkedIn has launched a mobile version of its service. In fact, not only can you use it with your BlackBerry, but also on Apple (NASDAQ: AAPL)'s iPhone as well as other devices.

What's more, LinkedIn has added language support for English, French, German, Spanish, Japanese and Chinese.

However, the mobile edition is in the beta phase and as a result, the feature set is somewhat limited. For example, you can't accept an invitation or even update your profile. Yet, I'm sure LinkedIn will continue to evolve the product and get a sense of user behavior over time -- which has been a hallmark of the company over the years.

Tom Taulli is the author of various books, including The Complete M&A Handbook and The Edgar Online Guide to Decoding Financial Statements. He also operates DealProfiles.com.

Visit a college campus and it's obvious that the MySpace generation can't live without mobile devices. And, of course, they want smart devices that are sleek and cool.

No doubt, this is a big opportunity for Microsoft (NASDAQ: MSFT), which needs to find new markets for its software.

So, today the company announced it is purchasing Danger, which has a platform that helps to deliver mobile applications.

The company focuses primarily on the T-Mobile Sidekick family. Some of the capabilities include: IM, real-time email, HTML browsing and social networking. There are about 923,000 subscribers and revenues hit $56.4 million last year.

A big problem: over 90% of revenues come from T-Mobile. That's certainly a risky proposition.

Interestingly enough, Danger recently filed for a public offering. But in light of the recent market turbulence, a deal with Microsoft certainly seems less dangerous for shareholders.

Tom Taulli is the author of various books, including The Complete M&A Handbook and The Edgar Online Guide to Decoding Financial Statements. He also operates DealProfiles.com.

While the mobile space is huge, it's still not easy to penetrate. Yet, with only $2 million in angel funding over the past couple years, Ringleader has done quite well. The company has put together a sophisticated online advertising network, which helps with mobile ads (as well as those on the desktop). Some of its customers include Best Western, Absolut and Blu-Ray.

Well, now Ringleader has some more juice. That is, the company has raised $6 million from W2 Group, which is a global marketing services company.

"Growth is ramping in mobile ads," said Bob Walczak, the CEO of Ringleader, in an interview with me. He points out that in 2005, the typical ad purchase was a paltry $5,000 to $10,000 per campaign. But, as of last year, it increased to $50,000 to $100,000. "Going into 2008," said Walczak, "we are seeing proposals for seven figures."

There are some big drivers, such as Google (NASDAQ: GOOG)'s Android platform and Apple (NASDAQ: AAPL)'s iPhone. But perhaps the biggest key is that mobile ads tend to get results. "We are seeing click-through rates of 2% to 3%," said Walczak. "This compares to a traditional web ad that gets 0.1%."

Tom Taulli is the author of various books, including The Complete M&A Handbook and The Edgar Online Guide to Decoding Financial Statements. He also operates DealProfiles.com.

Google (NASDAQ: GOOG) CEO Eric Schmidt often says that the mobile frontier is the next biggest opportunity for Google. In terms of the math, he's correct: there are many more cellphones in use worldwide than PCs -- all it takes is to get customers accessing the web on their phones. So far, success has been mixed, however, Apple (NASDAQ: AAPL)'s iPhone is changing the game. iPhone users are going on the web constantly.

The web search giant has just taken a large leap in that direction, now that it has announced YouTube Mobile availability on millions of existing cellphones. The more customers that buy advanced, 3G-capable wireless phones, the more potential customers Google will have accessing YouTube content and even uploading videos directly from their handsets.

YouTube mobile product manager Dwipal Desia indicated, "It's basically the full YouTube experience you can get on the desktop -- on the phone." With YouTube easily the world's most popular online video property, can Google transfer this to the mobile arena in the next year or two? Getting customers to use YouTube Mobile is the largest barrier -- because once you've used it, it's hard to resist (from my experience, anyway).

Although Google referenced the iPhone and phones from service provider Helio, the company did say that the full YouTube video experience was not available on handsets from the second-largest wireless carrier, Verizon Wireless. The next step, of course, will be for Google to find out how it can monetize YouTube Mobile.

TheStreet.com's Jim Cramer says there's clear evidence of Verizon's outperformance here.

Was AT&T (NYSE: T) (Cramer's Take) misinterpreted when CEO Randall Stephenson spoke at the Citigroup Entertainment Conference? That was the one where the stock traded down horribly after Stephenson spoke about the consumer business.

I know I thought it wasn't.

I read the comments that he made, or at least read the quotes of them, and they seemed like a change at the margin that could bring numbers down and implied that the economic downturn is leading to fewer phone calls and fewer phone lines and fewer broadband lines. I didn't know any other way to read it.

Neither did the press, with many of the headlines from around the country reading that AT&T "warned" about the quarter. None of the buyside or sellside firms I spoke to or read seemed to believe that this was just plain vanilla. All that I spoke to -- and I spoke to a half dozen -- felt this was a change at the margin that would impact earnings.

It was certainly an exciting year for wireless. Apple (NASDAQ: AAPL)'s iPhone was a game changer, there were some big announcements from Google (NASDAQ: GOOG), and even Nokia (NYSE: NOK) made an impressive comeback.

As for 2008, it's a good bet we'll continue to see some big headlines.

I interviewed Frank Dickson, who is the chief research officer at MultiMedia Intelligence. According to him:

The handset as a platform: The introduction of the iPhone was the first example of this. It did not create the trend, but it did add fuel to the fire. Google's Android and a rumored Java-based OS are elements of the developing trend. Essentially, we are seeing the rise of a new class of mobile devices that are applications centric with voice functionality. These devices are internet browsers, music players, text messengers, and e-mail devices. Yes, they still make voice calls, but they are clearly optimized for other uses. Operators such as Verizon Wireless (NYSE: VZ) are seeing the coming explosion of this product class and have embraced it by opening their networks to these devices.

The next frontier for social networking is mobile. And, early next year, News Corp (NYSE: NWS)'s MySpace will launch its own offering.

Interestingly enough, Sprint (NYSE: S) wants to be a part of the crowd and has struck a deal with MySpace (terms were not disclosed). Sprint customers will get free access, so long as they have a data plan.

In the latest stab into the belly of Microsoft (NASDAQ: MSFT), Google (NASDAQ: GOOG) has said that its Google Calendar product can now synchronize with Research In Motion (NASDAQ: RIMM)'s BlackBerry products. With the BlackBerry being the portable email device of choice for millions in the U.S., the ability to bypass Microsoft's over-the-air calendar syncing (available on newer Windows Mobile competitive devices) is yet another way Google is teaming with partners to make the software giant less relevant in an on-demand and internet-connected customer world.

Nokia (NYSE: NOK) is No. 1 in handset market share worldwide, with almost 40% of units sold. But in the U.S., by most calculations, it ranks fourth. And with new products like Apple (NYSE: AAPL)'s iPhone, it may be hard for the Finnish company to make much headway in America.

But Nokia will try. The company understands, to some extent, why things have gone badly here. "We felt we could teach the U.S. market how we do business elsewhere, and frankly, that failed," Olli-Pekka Kallasvuo, Nokia's CEO told The New York Times. "Now we just want to act, based on the needs and requirements of the market."

Nokia may have an innovative way to beef up sales in the U.S. It has started its own music download service, which gives away a year of free downloads with the purchase of one of the company's phones. Nokia also has advanced GPS options built into a number of its smartphone products.

But music and internet-based service really do little to differentiate Nokia. If they are not options already offered by other handset companies or U.S. cellular carriers, they can certainly be duplicated. And that is Nokia's problem -- it may have very little new to offer.

Douglas A. McIntyre is an editor at 247wallst.com.

It's been a great year for Nokia (NYSE: NOK)'s investors, with the stock up about 76%.

But at its Investor Day conference, things were not so sanguine. The company announced that its operating margins should be 16%-17% over the next year or two – which was a bit disappointing.

Yet, the company expects to gain market share (especially in emerging markets like China), as well as introduce new content services. For example, the company struck a deal with Universal Music for free unlimited music downloads, so as to blunt Apple (NASDAQ: AAPL)'s iPhone.

I had a chance to interview Frank Dickson, who is the Chief Research Officer of MultiMedia Intelligence. According to him:

"Nokia is seemingly taking pages from the lesson book developed by IBM (NYSE: IBM). IBM was once the dominant PC manufacturer. As open platforms and technology vendors leveled the playing field, IBM lost its position to lower cost manufacturers. However, IBM was able to leverage its hardware position to create a value-added services business. Nokia, in turn, is leveraging its dominant position in handsets to create a value-added services offering to the end consumer.

Verizon Communications Inc. (NYSE: VZ) certainly likes to tout its mobile network (hey, that's what old-telcos do, right?) But, this means having a closed system, which could mean less innovation.

Well, things are changing. That is, Verizon is going to loosen things up. This means that you will be able to use some non-Verizon cell phones on the Verizon network.

To get some perspective on things, I had a chance to talk to Frank Dickson, who is the chief research officer at MultiMedia Intelligence (an independent research firm that's focused on mobile technology):

"One of the key themes of 2007 has been the evolution of the handset from a dedicated device to a platform. The migration of PDAs into handsets with an open OS started the trend. Apple Inc. (Nasdaq: AAPL)'s iPhone and Google Inc. (Nasdaq: GOOG)'s Android seemed to have thrown gas on the evolution fire. The Verizon announcement seems to continue the trend, responding to consumer desires to customize their mobile experience. The evolving mobile experience goes far beyond communication but also includes entertainment and productivity. Verizon may simply be recognizing the difficulty and complexities of satisfying the needs of all the needs of niche and sub-niche needs with a standard offering.

"One of the facets of this announcement that cannot be overlooked is the movement to becoming a bandwidth or conduit provider. After all, Verizon Wireless did say, 'that it will provide customers the option to use, on its nationwide wireless network, wireless devices, software and applications offered by the company.' This announcement is certainly a small step in that direction."

Tom Taulli is the author of various books, including The Complete M&A Handbook and The Edgar Online Guide to Decoding Financial Statements. He also operates DealProfiles.com.

Verizon Wireless, a joint venture between Verizon Communications Inc. (NYSE: VZ) and Vodafone Group Plc (ADR) (NYSE: VOD), announced today that it would be providing open access to its network in the near future. In short, customers will be given the option to use, on its nationwide wireless network, wireless devices, software and applications not offered by the company.

This is interesting stuff and the refashioning of a common practice for network operators to bundle a sale of a phone together with network connectivity. Now, consumers can decouple their cellular purchases and use whatever phones suit them.

The Wall Street Journal article discussing the Verizon announcement explained that "in the short term, the impact of the shift may be limited. Some analysts expect Verizon to charge customers using an outside phone more for its cell phone service. At the same time, because Verizon -- like other cell phone companies -- subsidizes the cost of phones, few consumers may want to spend the hundreds of dollars necessary to buy a phone independently of a carrier."

In the world of Google Inc. (NASDAQ: GOOG), each passing day brings more news about some added feature, idea, business partnership or gadget, and today it is no exception. Despite much hype that Google would be announcing the "gPhone" today, instead: "Google along with 33 other companies are announcing Android, the first truly integrated mobile operating system." What's particularly notable is that it's available under a mobile open source license.

This is becoming very Google-esque -- a major partnership announcement! Google watchers (and shareholders) can appreciate that Google does not want to be in the hardware business, at least not right now. The company is in the partnering business. It has made the very wise decision to create as many partnerships as it can, attractive to both parties given that partners will make money by working with Google, without a new cost. Its selling point to Internet users: we are the nice guys and we bring you so many features that make your life easier and fun (sounds like Apple Inc (NASDAQ: AAPL)). How can someone resist that?

Google hopes to create not 'a' new platform for cell phones, but 'the' new platform for cell phones. In doing so the company will be expanding the Google universe.

Google, Inc. (NASDAQ: GOOG) likes to make the most complex thing you'll ever do into the most simplest task. Much of the planet knows how easy it is to use Google's market-leading search engine, but the talent and technology to make that possible would be mind-boggling to many of us.

If you've used a cellphone in the last year, you're probably aware of how complex that category has become. In standard fashion, cellphone makers and wireless carriers both are cramming more features into wireless phones these days as a way to recruit more customers. Long gone are the old differentiators like coverage area and minute packages, and in are MP3 players, streaming video and amazingly complex user interfaces for even the most basic of cellphones. Google wants to change that, and apparently it won't bother with yet another handset that would just get lost in the fray.

No, Google's simplistic approach, as it always has been, may be in the software that powers these devices instead of making the hardware itself. Right now, Microsoft Corp. (NASDAQ: MSFT) makes the Windows Mobile operating system for advanced wireless phones, but it's laden with overkill for most of us. Yes, we all want email and multimedia applications on our phones, but we can do without the complexity current solutions have to offer. If Google were to license or give away its mobile operating system technology to manufacturers and have a say in the design itself beyond the software -- and support the effort using in-phone advertising of some sort -- the world of cellphones could change for the better. If we thought the Apple, Inc. (NASDAQ: AAPL) iPhone was "revolutionary,'" then maybe the 'gPhone' could be one step beyond that.