Unfortunately, none of the search engines that consider link popularity in their algorithm (Infoseek, HotBot and Lycos) only are known for their ability to index pages found from links. Lycos will travel one level down from the submitted page and HotBot can, but does not necessarity follow all links, but Infoseek does not typically index pages unless the page itself is submitted.
Have you considered using an automatic submission program to submit the FFA pages to these search engines?
I've been thinking of trying something like this myself. You say you've had good results???