One of my thoughts to customize the content of the co-branded site would be to add an additional field to the Links SQL database and use this field to determine when and how something is displayed.

For example, a radio station might want to determine the most popular songs. The field could/would be used to determine if it appears in the general links listings, and/or the co-branded listings.

Not knowing the logic of the script or perl, this is just a thought.