I have a parent domain that has adsense on. I would like to have a sub domain site and have some adult content but I dont place any adsense in sub domain site, is this allow?
yes it's ok even on same domain, but you can't link pages with adsense directly to pages with porn this is my experience
I would say it's a bad idea for two reasons: - Google says Adsense is not allowed on SITES with adult content, not just pages with adult content. It is possible - even likely - they would consider your subdomain as part of the same site. - Google says Adsense is not allowed on sites that LINK to adult content. So you wouldn't be allowed to link the part of your site with Adsense to your adult subdomain. See the program policies: https://www.google.com/adsense/support/bin/answer.py?hl=en&answer=48182 You would be better off using different ads, or putting your adult material on a different domain altogether.