However, it was painful for DELL to strip back the fixed costs associated with its desktop operating model that once gave it strength.

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Mobile screens are too small, no one has really come up with a viable (or at least as productive as desktop) advertising model here.

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More specifically, advertisers and brands are already realizing that simply transferring the creative model from desktop, such as banner ads, does not work on mobile.

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The OS has come in for criticism but praise goes too, for having access to the Microsoft productivity suite, and the extensibility of Windows 8 across mobile and the desktop, though the launch model has a pared down version of the OS, RT, which limits productivity.

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Meanwhile, IT organizations that have already shifted from a desktop-based to a server-based model will be able to respond to the Y2K threat more quickly, and their highly visible success should further drive the market in that direction.

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Based on the principles outlined in the previous paragraphs, I came up with a model (an educated guess) that said the bedrock desktop market would stabilize at 30% of all shipments.

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In fact, argues Nicholas Carr, the former editor of the Harvard Business Review and author of the new book The Big Switch, those Web applications are signs of a fundamental change, a shift from the desktop to the Web that could redefine computing--and Google's business model.

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The 17-inch model boasts a screen that is equal in size to that found on the largest iMac desktop computers.

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The usage on desktop is declining and Facebook is going to spend a major chunk of its resources in optimizing its business model on mobile platform.

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