It is my understanding traffic, pages viewed and length of time on the site is a larger portion of the Yahoo algorithm than the Google algo.
IMHO is should be a greater factor than inbound links and/or domain age.
These factors would be a better indication of good content and usability.
Inbound links (as the Search Engines are learning) are too easily to manipulate.
As far as real estate leads, targeted traffic is the best.
Just my 2¢,
~VegasMack