Now, we've heard all this before: Google Inc. (NASDAQ: GOOG) may someday make its own PC, cellphone or other electronics device. While Google is doing just fine in the web search business, it would be a mistake to rule out the company's possible intention to get into the consumer hardware business one of these days. After all, Google already makes hardware for business and at some point it may make sense for the company to make hardware for its consumers. Why?

Well, anything that can give Google web customers the ability to see more of its advertising -- from a cellphone screen to a new PC in the den -- gives Google more advertising impressions (and clicks) that directly lead to more revenue for the company. If spending $1 billion to develop "green," environmentally-sound PCs means that Google could see $2 billion in advertising revenue over a year's time, I'm quite sure the company would get into that business, if nothing more than to experiment and get its feet wet.

One thing I have heard Google CEO Eric Schmidt say many, many times (and I've referenced those remarks quite often) is that he believes the future of Google's business is in the mobile space, meaning mobile phone advertising and products. That may be true, but it won't happen overnight. Until then, it's interesting to note that Google recently registered the website name "climatesaverpc.com." Perhaps Google will get into the environmentally-conscious PC market before we all dump our cable modems and blazing-fast PCs for those tiny cellphone screens with limited data speeds?