http://www.webmasterworld.com/forum89/3318.htm (^ but that thread is from 2004!!!!) My friend just told me that adsense is OK for free hosts now.. can anyone else confirm this? Thanks.
Adsense is ok with any kind of pages, free or paid. Onething which is vital to consider, price of a click you get from free sites and from proper domain which gets good traffic as well. In my Expereince, same topic/content (e.g; insurance, music) on different domains, same content on Proper domains or Free domains, In all scenarios Google delivers different ads or Different price(if ads are same) Hope this makes soem sense.