Sitemap Extensions:
As well as basic URL information, Sitemaps can contain detailed information about specific types of content on your site, including video, images, mobile,News, software source code, and geographical (KML) information.
Depending on the type of content included in your Sitemap, you should specify the appropriate namespace(s), listed in the table below. Be sure to specify the namespace for every type of information included in your Sitemap.
General URLxmlns="http://www.sitemaps.org/schemas/sitemap/0.9"Imagesxmlns:image="http://www.google.com/schemas/sitemap-image/1.1"Videoxmlns:video="http://www.google.com/schemas/sitemap-video/1.1"Mobilexmlns:mobile="http://www.google.com/schemas/sitemap-mobile/1.0"Code Searchxmlns:codesearch="http://www.google.com/codesearch/schemas/sitemap/1.0"Geoxmlns:geo="http://www.google.com/geo/schemas/sitemap/1.0"Newsxmlns:news="http://www.google.com/schemas/sitemap-news/0.9".Google recommends, however, that you create separate Sitemaps for news content; these Sitemaps will be crawled very frequently to check for new articles. More information about news Sitemaps.
Depending on the type of content included in your Sitemap, you should specify the appropriate namespace(s), listed in the table below. Be sure to specify the namespace for every type of information included in your Sitemap.
General URLxmlns="http://www.sitemaps.org/schemas/sitemap/0.9"Imagesxmlns:image="http://www.google.com/schemas/sitemap-image/1.1"Videoxmlns:video="http://www.google.com/schemas/sitemap-video/1.1"Mobilexmlns:mobile="http://www.google.com/schemas/sitemap-mobile/1.0"Code Searchxmlns:codesearch="http://www.google.com/codesearch/schemas/sitemap/1.0"Geoxmlns:geo="http://www.google.com/geo/schemas/sitemap/1.0"Newsxmlns:news="http://www.google.com/schemas/sitemap-news/0.9".Google recommends, however, that you create separate Sitemaps for news content; these Sitemaps will be crawled very frequently to check for new articles. More information about news Sitemaps.