hello, currently , i am setting up my server. and i would like to have 2 subdomain
names, which is mean 1. www.domainname.com
2. kw1.domainname.com
3. kw1.domainname.com
but my question here is what is different between
www.domainname.com/kw1/ and kw1.domainname.com?
the second one will take more advanatage from that?
and usually i put the robots.txt under the root directory,
but if i have the subdomain, do i need to also copy the same
robots.txt file to different root?
thanks