Sitemap for a site with a large number of dynamic subdomains

Question

I\'m running a site which allows users to create subdomains. I\'d like to submit these user subdomains to search engines via sitemaps. However, according to the sitemaps protoco

Answer 1

If you have a website that allows users to create sub-domain within your site, it is better for you to simplify the process by creating and submitting sitemaps for each subdomains by creating a single sitemap. This includes sitemap URLs for all your subdomain sites and saving this sitemap to a single location. But, to do this, all sites must be verified in webmaster tools. You can define one sitemap as:

http://example.com/sitemap.xml

Define all your sub-domain sitemaps for all your sub-domain URLs under this document tree.

You can define multiple sitemap files upto 50,000 URLs and 10 megabytes file size per sitemap. Sitemaps can be compressed using gzip to reduce the bandwidth. So, you don’t have any problem by defining the sitemap in this way.