How Much of the Web is Indexed?

So, how big is the web anyway?

According to Danny Sullivan, 11.5 billion web pages have been indexed. This statistic comes from a paper written by Antonio Gulli and Alessio Signorinialso and also includes other statistics such as:

• Google has an 8 billion page index
• Yahoo has 6.6 billion pages
• MSN has 5.1 billion pages.

Danny asks the poignant question: does it really matter how big each search engine’s index is if all the pages can’t be accessed? In this instance, it is really a matter of quality over quantity. Having a huge amount of web pages really doesn’t benefit anyone if the most useful pages are not accessible in searches.

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