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Jason Lee Miller, over at WebPro News has written an article called "Scholars Push For Search Engine Regulation".

In summary, he is concerned with Google controlling the universe of information.

I would say he has some valid points and concerns. But, let's be realistic. The major media outlets, TV / Radio, have as much stronger control of information than Google. And, the internet as whole, allows far greater access to divergent opinions and thoughts than all the major media outlets combined. As you know, you can find information on just about any subject or topic you like, and it's not all politically correct.

So, this concern, I think is off target.

If you want to be concerned about something, I recommend investigating local ISP's filtering data. ISP are the real key holders, the bottleneck points.

Check this article out:
Yes Virginia, ISPs Have Silently Blocked Web Sites