>Databases can be HUGE sources of content for those with the
>skills or resources (willing to hire someone). Many hardcore
>blackhat SEOers rely heavily on creating sites using
>databases.
>
>This site has a nice collection of databases:
>http://www.odditysoftware.com/
>(It also has some good expired domain tools)

Doing what? Setting up a network of (sort of content) - directories spread over different hosts (different IPs) linking to silver/gold sites?