Anyone have any ideas on Yahoo? I am at the top of MAJOR keywords for Google and MSN, but my best keywords I have two good keywords, one is right under realtor.com

(note to all realtors PM me for exchange)
90% of my backlinks are all relevant and very strong. The 10% are my oldest links when I just thought it was numbers. The one keyword I do rank well for I probably have some of my strongest backlinks too and the most so is Yahoo, at this point, just mass relevant numbers? I show about 500 backlinks not counting the other 500 internal pages shown as backlinks. While that may not seem like a lot they are mostly PR3 and higher? Should I just pick a keyword that I have yet to pick links up for and really go and get 50 links over the next week to that one keyword to see what happens?
It's pretty sad when MSN's traffic DOMINATES Yahoo's in my stats, while Google is twice as much as all others combined. Man did I love it when I came through the sandbox last month
