Make sure that you have the desc and keywords metas in the head of your pages - Yahoo does use that - also the page content (called on-page factors) is king at Yahoo - make sure you are W3C compliant with your html, and keep making pages
The other factor if it is a LL, is that Yahoo is very strict about "looking like a linkfarm"
They have not included too many LLs that have been around for a long time as they have a little penalty given to a lot of us for looking like too much link trading