Friday, July 22, 2011

Official Google Webmaster Central Blog: Improved handling of URLs with parameters

You may have noticed that the Parameter Handling feature disappeared from the Site configuration > Settings section of Webmaster Tools. Fear not; you can now find it under its new name, URL Parameters! Along with renaming it, we refreshed and improved the feature. We hope you’ll find it even more useful. Configuration of URL parameters made in the old version of the feature will be automatically visible in the new version. Before we reveal all the cool things you can do with URL parameters now, let us remind you (or introduce, if you are new to this feature) of the purpose of this feature and when it may come in handy.

When to use
URL Parameters helps you control which URLs on your site should be crawled by Googlebot, depending on the parameters that appear in these URLs. This functionality provides a simple way to prevent crawling duplicate content on your site. Now, your site can be crawled more effectively, reducing your bandwidth usage and likely allowing more unique content from your site to be indexed. If you suspect that Googlebot's crawl coverage of the content on your site could be improved, using this feature can be a good idea. But with great power comes great responsibility! You should only use this feature if you're sure about the behavior of URL parameters on your site. Otherwise you might mistakenly prevent some URLs from being crawled, making their content no longer accessible to Googlebot.

Official Google Webmaster Central Blog: Improved handling of URLs with parameters
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