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Twitter calls Google (GOOG) a "good role model," but says it isn't ready to rush down the road to advertising.

Nonetheless, an ad-based revenue model is something that cofounder Biz Stone says they "will be looking to do down the line." But, for now, he continues, Twitter is focused on "creating value for our users." For now, revenue generation ideas are being put on paper, "and we're definitely going to get to them," Stone says.

Google (GOOG) is letting a few developers peek behind the curtain. The early look the company's new operating system, Chrome, is happening in true Google style: by invitation only. When it's released, which should be in time for the holidays, developers will be able to bang away at an open source solution, tapping an army of volunteers who are eager to work for bragging rights.

The open source version is called Chromium OS, which will hit the market a year before the "consumer" version is ready, which is how Google will be able to tap the wisdom of developers around the world. In a blog entry, Google explained, "This means the code is free, accessible to anyone and open for contributions." The project includes the code base, user interface experiments and some preliminary designs, all of which can be used for ongoing development efforts. To energize the potential base of contributors, Google said that "development will be done in the open from this point on."

Yahoo! (YHOO) is the latest company that wants to optimize its search results for Twitter. This follows moves by Microsoft (MSFT) and Google (GOOG) to integrate Twitter data into their search results. Unlike its competitors, however, Yahoo! wants to do this without spending a dime (well, without giving a dime to the hot new social media platform).

Twitter's microblogging service has become famous not only for its rapid growth but also because it's found no way to turn it into revenue. Its recent discussions with Microsoft and Google demonstrated that Twitter can indeed bring in some cash -- by licensing its data for use in fine-tuning search engines. With two of the top search engines now optimizing for Twitter, it was only a matter of time before Yahoo! would rush to join the party.

Google (GOOG) and Apple (AAPL) were once favorite friends. When Google CEO Eric Schmidt resigned from Apple's board of directors, though, the gloves came off. With Apple's venerable and extremely popular iPhone selling for $99 (for the base edition), Google's "Android" phones -- made by several manufacturers and sold by many carriers -- have not matched those low Apple prices. Not any more.

Consumer electronics retailer Best Buy (BBY) is selling the Samsung Moment and the HTC Hero for $99 through December -- matching Apple's iPhone pricing for a two-year contract. That's with no rebates, either. So, the question is this: will Google's Android-powered phones start gaining traction on the iPhone? With AT&T's (T) penchant for poor service and for exorbitant calling plan prices, this may be enough to get those on the iPhone fence switching over to a touchscreen Android phone.

TheStreet.com's Jim Cramer says traders who focus on the negative will pounce on this poor report.

Thanks for nothing, Dell (DELL) (Cramer's Take)! Given that this market seems to care less about the good like NetApp (NTAP) (Cramer's Take), Ross Stores (ROST) (Cramer's Take) or Limited (LTD) (Cramer's Take) and is focused on the bad, like the semi-downgrade from Bank of America Merrill Lynch, I am sure that Dell will be viewed as part and parcel with the downgrade.

I can't stand Dell. I actually slam it in Getting Back to Even, taking a chance that it would get its act together and make me look bad on the very quarter the book is released. Looks like that was a lot of worry for nothing.

Wednesday's strong IPO of Fortinet is yet another sign that investors are warming up to early-stage deals -- especially of fast-growing companies.

So does this mean we'll see a public offering of a company like Facebook?

Maybe so. According to Bloomberg News, there has been lots of activity in the private shares of Facebook, which have spiked 42% over the past couple months. The valuation now comes to about $9.5 billion.

Once upon a time, Mac users could brag they were much safer from malicious electronic attacks. After all, in the days before Google (GOOG), when Microsoft (MSFT) was the only uber-player in town, Windows was the perpetual malware target. Phishers, however, aren't discriminating; they're just looking for an account to plunge. So, both Apple (AAPL) and Microsoft users are threatened. Virus writers do tend to focus on the Windows operating system, which owns 90% of the OS market, but phishers are platform independent.

Phishing involves attempts to get a user to reveal information about their accounts. Once the soon-to-be victim clicks that link or fills out a form, the "transaction" is complete -- no operating system interaction necessary. As a result, there really isn't any advantage to using a Mac over a PC.

Amazon, Inc. (AMZN) is in the clouds. So are Google, Inc. (GOOG), EMC (EMC) and Cisco (CSCO). Now, Microsoft Corporation (MSFT) is joining them, having announced on Tuesday its new Windows Azure cloud computing system. The new product will be released on January 1, 2010 -- a new solution for a new year.

Azure will deliver an online platform for the software development set to build their own mousetraps and provide plenty of storage space for users. Testing began a year ago, and full live version will be celebrated next year. For the first month, Azure will be free. The charges start in February.

BT Group, which virtually owns the UK telecommunications market, isn't waiting for Google (GOOG) to launch a full attack. The company probably expects to be under assault from the search engine (and advertising and e-mail) giant, so it's taking early action. Google Voice is still being tested, but words like "free" and "powerful" and "internet-based" are bound to inspire fear in even the most established of companies.

To protect itself from the eventual attack from Mountain View, BT picked up Ribbit Mobile, and testing is in progress. Ribbit's technology has some overlap with Google Voice and even beats it with a few capabilities, according to Bloomberg. Ribbit just launched its beta product this month. It allows either the user's current phone number or a new one from Ribbit -- which is no different from Google's alternative. The product suite is generally the same, with phone- and web-based voicemail retrieval and automatic transcriptions that can be sent by text message or e-mail. For an extra fee, BT's Ribbit does provide human transcription, though it is free during testing. And, calls can be taken directly from a computer, using a microphone and speakers.

Morale has plunged among military personnel in Afghanistan as a result of record violence in the war, according to the U.S. Army. A battlefield survey found that the situation is particularly problematic for soldiers on their third and fourth combat tours, and junior enlisted soldiers are most likely to experience marital problems because of deployment. Though it's not a complete solution, the study did find that limited doses of technology – either through video games or internet access – can help.

The study, obtained by NBC News, revealed that more than 20% of soldiers are experiencing combat stress, and half of them are having difficulties getting professional help. Combat Stress units in Afghanistan, the report says, are "undermanned," and this type of unit has no presence in the southern part of Afghanistan, where most of the combat is taking place.

Michael Moe knows how to make headlines: Talk about Twitter and predictably people will bite (I'm proof of that). He led the team at NeXt Up Research that calculated the value of the micro blogging service and arrived at $526 million to $674 million -- half what Twitter is generally believed to be worth.

Really?

The team estimates that Twitter will generate revenues of $114 million to $134 million in 2013. In 2014, Twitter is expected to post revenues of $126 million to $148 million. This is far more conservative than the valuation implied by the company's most recent round of venture capital investment, which puts the company's worth at more than $1 billion.

Even the thought is hard to believe for anyone who's been watching Apple Inc. (AAPL) over the long run. Once upon a time, the company was presumed dead, while Microsoft Corporation (MSFT) continued its march to market dominance. Today, Apple's $180 billion market value is evidence of a new era. Though it's still behind Microsoft's $250 billion, the company's rapid ascent and substantial market presence make at least speculation of catching up to the Redmond giant worth a few minutes of thought.

Microsoft is currently the most valuable technology company in the world, according to a Reuters report. Even Google, Inc (GOOG), with its astounding brand recognition and position as gateway to the internet, is worth "only" $136 billion. Apple, which was once considered a computer company that sold into education and appealed to some graphics geeks, has reasserted itself as a major global presence.

The vision of Clearwire (CLWR) is definitely ambitious: to "give you faster Internet at home, at work and on the go, so that people everywhere will have the magic of the Internet with them all the time." This means building a sophisticated network across the country, which does not come cheap.

Tuesday, Clearwire announced yet another financing round, which comes to $1.56 billion. The investors include Sprint Nextel (S), Comcast (CMCSA), Time Warner Cable (TWC), Intel (INTC), Eagle River Holdings LLC, and Bright House Networks LLC.

Out of the kindness of its ginormous heart, Google (GOOG) is giving holiday travelers a bit of cheer this season, providing free Wi-Fi in 47 U.S. airports starting today and running through January 15. As a bonus to Virgin America passengers traveling within the continental U.S., Google is providing in-flight Wi-Fi as well.

Of course, the Web search giant has an ulterior motive. In a statement, a Google spokesperson said: "This is one of our holiday gifts to our users, and when you connect, we also hope you'll take the opportunity to try some of the latest Google products."

While attending the MBA program at the Wharton School, Omar Hamoui was trying to solve a big problem. Basically, he wanted to find a way to get advertising revenues from his mobile site. Then he realized that many other sites probably had the same problem. So why not start a company to solve the problem?

That what he did, creating AdMob (yes, he is still on leave from Wharton). And, it was a great move. Today, Google (GOOG) agreed to buy AdMob for a cool $750 million in stock.