Sitemap cross-submissions

Since the launch of Sitemaps, webmasters have been asking if they could submit their Sitemaps for multiple hosts on a single dedicated host. A fair question -- and now you can!

Why would someone want to do this? Let's say that you own www.example.com and mysite.google.com and you have Sitemaps for both hosts, e.g. sitemap-example.xml and sitemap-mysite.xml. Until today, you would have to store each Sitemap on its respective host. If you tried to place sitemap-mysite.xml on www.example.com, you would get an error because, for security reasons, a Sitemap on www.example.com can only contains URLs from www.example.com. (Read more...)