I posted a source code on codeplex and to my surprise found that it appeared on google within 13 hours. Also when i made some changes to my account on codeplex those changes reflected on google within a matter of minutes. How did that happen ? Is there some extra importance that google pays to sites like Codeplex, Stackoverflow etc to make their results appear in the search results fast ? Are there some special steps i can take to make google crawl my site somewhat faster, if not this fast.
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Google prefers some sites over others. There is a lot of magic rules involved, in the case of CodePlex and Stackoverflow we can even assume that they had ben manually put on some whitelist. Then Google subscribes to the RSS feed of these sites and crawls them whenever there is a new RSS post.
Example: Posts on my blog are included in the index within minutes, but if I dont post for weeks, Google just passes by every week or so.