I'm managing a site for a Costa Rica real estate company. Top 10 in Yahoo for quite some time, currently top 10 MSN for the term "costa rica real estate" and Top 15 in Google. The site started at 240 in google and within 9 months reached top 10 in all 3 engines. It's been constant for 6 months but for the last month the site has been 160+ in Yahoo. It's got loads in incoming links with great anchor text, it compares well with the top 10 competitive sites. I'm stumped...Yahoo has betrayed me.

I'm looking for some guru help here.

Last month Yahoo changed their algo. But this post is ealier to it, i believe. I noticed that, sudden increase in incoming links drop your ranking in Yahoo SERP

Did your ranking in yahoo come back to normal? I think that's rank dance, and will be back in a few days.