I'm running a webhosting service where people sign up and get a simple site on a subdomain: username.mydomain.com
We get a lot of support tickets because the subdomain doesn't show up immediately in Google's results. What would be the best way for me to make search engines aware of these newly created subdomains asap? (~200 new sites a day)
I'd prefer not to have a public listing of all customers, but perhaps that's the only way?
It says a sitemap can only reference urls lower than the current level, but I need to notify Google of newly created subdomains...
The location of a Sitemap file determines the set of URLs that can be included in that Sitemap. A Sitemap file located at http://example.com/catalog/sitemap.gz can include any URLs starting with http://example.com/catalog/ but can not include URLs starting with http://example.com/images/.