I already have submitted a sitemap for my domain, do I still need to submit my subdomain name in google webmaster tool?
Depends on what content you have. Check the sitemap to see if the subdomain is included. Most likely, you need to do a subdomain name.
Sorry if I have to take this old post ( May 2006 ) to ask again, because from ThomasSchulz mention on sub-domain. What's is the location of this new sitemap of sub-domain that I should put?. I mean if I have sub.xx.com for my sub-domain.