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How its done that when I publish some post on stackoverflow.com, it at once becomes visible in google search?

Like this http://www.google.ru/search?q=fill+body+with+images&ie=utf-8&oe=utf-8

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migrated from stackoverflow.com Sep 10 '10 at 20:47

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Questions about the site itself belong on meta. Also, this particular question has been discussed earlier (on meta or in SO blog); I'm sure someone finds a link to that soon. –  Jonik Sep 10 '10 at 20:43

3 Answers 3

up vote 7 down vote accepted

The reason that your question shows up so quickly on Google is because Google's crawlers knows SO is a high-traffic site, so it keeps its eyes on the site more often, so-to-speak. It works that way for any major, high-content website. As the content produced scales up, and changes happen more often, Google indexes it more often.

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Also, Google probably knows that StackOverflow.com has high-quality, keyword-rich, relevant content. So it gets indexed more frequently than other sites with less relevant content. –  The Unhandled Exception Sep 10 '10 at 21:06
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this can easily turn into a SEO tips post :) –  RobertPitt Sep 10 '10 at 21:16
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Yeah, except the SEO tips here are not the kind that the SEO bottom-feeders are looking for. The moral of the story here is: Create content people find useful. –  pkaeding Sep 10 '10 at 22:02

It's because SO has a sitemap (not accessible to normal users, there is an IP check), so google can instantly know what pages have changed and what pages have been added.

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Really, that's awesome! –  The Unhandled Exception Sep 10 '10 at 21:57

It doesn't.

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And now it does ;) –  Reed Copsey Sep 10 '10 at 20:50
    
My mind is warped now, thanks. –  Steven Sudit Sep 10 '10 at 21:14

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