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Google Search Keeps Getting Better

Posted: Thursday, February 17, 2011

by Steve Berchtold
Natural Cures Remedies

We all know that Google changes their algorithm like we change underwear. (Well, hopefully anyway...)

What happens when you type a keyword into the Google search box? Your query is sent to Google machines and compared with all the documents stored in their index to identify the most relevant matches. In less than a second, their system "spits out" a list of the most relevant pages and also determines the relevant sections of text, images, videos and more. What you get is a list of search results with relevant information presented in "snippets" beneath each result.

Google always tries to give you "exactly what you want." That's been the goal from the beginning.

The "new" key ingredients of Google search in 2011 are:

Relevance
Comprehensiveness
Freshness
Speed

Relevance. Google's one main innovation was Page Rank, a technology that determined the "importance" of a webpage by looking at what other pages link to it, as well as other data. Today they use more than 200 signals, including Page Rank, to order websites, and they update these algorithms on a weekly basis. (They offer personalized search results based on the web history and location.)
Comprehensiveness. In 1998 Google launched with about 25 million pages, which even then was a small fraction of the web. Today they index billions and billions of web pages, and their index is roughly 100 million gigabytes. They continue investing to expand the comprehensiveness of their services. In 2007 they introduced Universal Search, which made search more comprehensive by integrating images, videos, news, books and much more into their main search results.
Freshness. In the early days, Google bots crawled the web every three or four months, which meant that the information you found on Google typically was out of date. Today, they're continually crawling the web, ensuring that you can find the latest news, blogs and status updates minutes or even seconds after they're posted. With Realtime Search, they're able to provide us with breaking topics from a comprehensive set of sources, just moments after events occur.

Speed. Their average query response time is about one-fourth of a second. The average blink of an eye is one-tenth of a second. Speed is a major search priority now, which is why they don't turn on new features if they will slow down their services. Instead, search engineers are always working on new features and ways to make search even faster. In addition to smart coding, on the back end they've developed distributed computing systems around the globe that ensure you get fast response times. With technologies like auto complete and Google Instant, they help you find the search terms and results you're looking for before you're even finished typing.

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