if you have a generic type url, you can have a zillion cpa campaigns, either sub domained or not.
www.abc.cxm/healthandhappiness/
www.abc.cxm/blooppressurehelp/
etc, etc, etc
This works best if you're not looking for the big G to index
Throw up a wordpress site if ya want, then add pages and don't let google index em. Easy stuff, cappy.