I thought this was a pretty good article and it points to some pretty good SEO tactics.
Brent D. Payne Interview | Tribune Company SEO
What I Got Out Of It
1. Building a network of sites, each being built and handled as a real business and separate from one another allows you to pull a real link punch when the time is needed.
2. Content is King and having a number of people writing articles that target different keywords allows you to drive traffic to a site daily.
3. Good content will get incoming links on its own.