In short, made a HUGE database, really huge
1) Database of Keywords - more then 1 million
2) Database of Articles
3) Taken free RSS , XML and other Feeds from different channels
4) Taking hosting supporting Multi Domains / Sub domains and Aliases
5) Making a clean and smiple CMS system
6) CMS to be smartly searching for the relevant keywords wr.t. domain
7) ON basis of it, content to display relevant articles, feeds and meta tags
Integrating Google adsense accordingly.
It is working better then my aprked domains for a year!!