BillyS - 2:55 pm on Dec 9, 2005 (gmt 0)

Could be the terms are just not very popular or that Yahoo is not a popular search engine for those terms.

Could also be related to the description that appears along with your link. If it looks too spammy or seems off target, it might not attract attention.

Could also be that a neighbor nearby result is just so attractive, it pulls away from you.

If you want to sticky me with an example, I'd take a look. Sometimes the owner is just too close to see a problem.