you use your own adsense and commission junction account to make revenue.
the script simply allows you to quickly setup parking pages from just a few keywords... pulling in content from rss feeds.
you can use one hosting account, and just one installation of this script for all your domains... as the script automatically shows different content depending on what domain the visitor arrives by. you can configure different content for each domain.
if you need any more info just ask or
Domain Zaar - Domain and adsense rss scripts