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Google Webmaster Tools
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Google Webmaster Tools is a service offered by Google to help website owners with indexing and ranking on Google search. Graphs and diagnostics are also given to let the user analyse Google traffic.
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The Google Sitemap Protocol allows a webmaster to inform search engines about URLs on a website that are available for crawling. A Sitemap is an XML file that lists the URLs for a site. It enables webmasters to include additional information about each URL: when it was last updated, how often it changes, and how important it is in relation to other URLs in the site. This allows search engines to crawl the site more intelligently.
Sitemaps are particularly beneficial in situations when it is difficult for users to access all areas of a website through the browseable interface. For example, a site with a large "archive" or "database" of resources that aren't well linked to each other (if at all), only accessible via a search form. The webmaster can generate a sitemap containing all accessible URLs on the site and submit it to search engines.
Note that the Sitemap Protocol is only a supplement and does not in any way replace the existing crawl-based mechanisms that search engines already use to discover URLs. By submitting a sitemap (or Sitemaps) to a search engine a webmaster is only helping that engine's crawlers to do a better job of crawling their site(s).
Using this protocol does not guarantee that your webpages will be included in search indexes nor does it influence the way that pages are ranked by a search engine.
After a sitemap is submitted via Google account, Google provides current crawler problem reports after a simple verification procedure to ensure only the site owner gets access to the stats area. For WAP sites Google uses a different procedure, and the URLs contained in the XML sitemap must be renderable on a mobile device.
The Sitemap Protocol is based on ideas from Brandman et al.[1]
January 2007 saw the introduction of a links tab within the Google sitemap interface. It is now possible for webmasters to monitor the number of inbound links to a site.
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Google provides a Python tool to generate the XML file based on the Sitemap Protocol[1]. It will look at server logs, web directory, or a list of URLs. The program can be scheduled to run, via cron or Windows Task Scheduler. During the program's execution it will notify Google that the sitemap has changed and to schedule a download of that sitemap...
- ^ O. Brandman, J. Cho, H. Garcia-Molina, and N. Shivakumar (2000). "Crawler-friendly web servers". Proceedings of the Workshop on Performance and Architecture of Web Servers (PAWS).