What is Google?

What makes Google so special? Most can't believe advertising revenues alone justify it's current price. Advertising is a $600 Billion market, given that Google shows a better return on advertising dollars then any other model, why shouldn't adveristing dollars keep flowing to Google? If someone does happen to build a better wheel, here are some other things Google is working on:

• algorithms • artificial intelligence • compiler optimization • computer architecture • computer graphics • data compression • data mining • file system design • genetic algorithms • information retrieval • machine learning • natural language processing • operating systems • profiling • robotics • text processing • user interface design • web information retrieval

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