Internet and WWW Technologies (Muddiest Points)

I was not aware that there was a body called the Internet Society, which was established to oversee the formation of policies and protocols that defined how persons used the internet. If so do they they function as an authoritative body or are they an activist group seeking to promote ethical practices?

Exactly why is Google a much more efficient search engine than others like Bing and Yahoo? Isn't the technology Google uses to send out its 'information crawlers' available to or known by their competitors? What gives Google the edge besides their simplistic user interface?

What is the difference between MARC and XML? Is there a chance that XML will replace MARC?

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