Paid Directories... Who do they feed?

[jiminsd]

I know GoTo, Findwhat and others feed their top bids to other directories. Is there any central place that lists these directories and the position you need to be in to get on the other feeded directories?

[meow]

A start:
http://www.searchenginewatch.com/links/Major_Search_Engines/Paid_Listings_Search_Engines/index.html