I have a site that deals a lot with trials and legal issues. This site is approved for Adsense and functioning well.
I also built a site for a friend who has a site that deals with legal issues. He doesn't mind; I just don't want to put my Adsense code on his site and get banned for it. Can I use my Adsense codes on the site I built for him, since the content is similar?
Or is this a violation since it's a completely separate domain?