salam every one, this is a topic from google web master centrale blog: Webmaster Level: Intermediate to Advanced
We recently filmed a video (with
slides available) to provide more information about the
URL Parameters feature in Webmaster Tools. The URL Parameters feature is designed for webmasters who want to help Google crawl their site more efficiently, and who manage a site with -- you guessed it -- URL parameters! To be eligible for this feature, the URL parameters must be configured in key/value pairs like
item=swedish-fish
or
category=gummy-candy
in the URL
http://www.example.com/product.php?item=swedish-fish&category=gummy-candy
.
Guidance for common cases when configuring URL Parameters. Music in the background masks the ongoing pounding of my neighbor’s construction!
URL Parameter settings are powerful. By telling us how your parameters behave and the recommended action for Googlebot, you can improve your site’s crawl efficiency. On the other hand, if configured incorrectly, you may accidentally recommend that Google ignore important pages, resulting in those pages no longer being available in search results. (There's an example provided in our improved
Help Center article.) So please take care when adjusting URL Parameters settings, and be sure that the actions you recommend for Googlebot make sense across your entire site.
Written by Maile Ohye, Developer Programs Tech Leadthis is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com