dear friends i would ask is it subdomain will against google TOS ? cos a viw my site using a subdomain and i put some adsense there thanks
No, it's not a problem, I have saw some sites use some hundreds subdomains for every page they have. [Look --> Forums.digitalpoint.com]
There is no problem in placing ads on subdomains . Think about all those blogger blogs they have also subdomains like http://blogname/blogspot.com
sudomains are fine as long as they are on your host. if you are using some free hosting service, then make sure your free host doesn;t display any adsense ads on the member pages,