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Search engines such as Google discover information about your site by employing software known as "spiders" to crawl the web. Once the spiders find a site, they follow links within the site to gather information about all the pages. The spiders periodically revisit sites to find new or changed content. Google Mobile Web Search crawls and indexes sites that have been specifically designed for mobile phones and devices. Google adds new sites to our mobile web index every time we crawl the mobile web. Users can search the mobile web on their mobile devices using Google Mobile Web Search.
Google Mobile Sitemaps is an extension of the Sitemap protocol that enables you to submit URLs that serve content for mobile devices into our mobile index. By using Mobile Sitemaps to inform and direct our crawlers, we hope to expand our coverage of the mobile web and speed up the discovery and addition of pages to our mobile index.
You create and add Mobile Sitemaps to your Google Webmaster Tools account in a similar way to Sitemaps for non-mobile content.
Request headers from Google's mobile crawl will always use the HTTP "Accept" header to explicitly tell your site that it should return documents with mobile content types, if available, rather than standard HTML. If your site respects this standard, your site will return mobile content correctly to our mobile crawl.
In some cases, Accept headers are ambiguous. For example, text/html is the content type for both cHTML, which is appropriate for certain types of mobile devices, and HTML, which is generally intended for desktop computers. Google's mobile crawl does its best to appear to be a mobile device, so if your site tries to detect mobile devices in other ways in a case like this, it will probably work for Google's mobile crawl as well.
Google's mobile crawl will send a User-agent header that contains the string "Googlebot-Mobile". |
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