I am working on my new website that is a local search engine for educational services in my area. The domain name is the main keyword. Since it is a new site, I wasn’t expecting a lot of promotion, but it took me by surprise when I was listed in the top 10 list. But the very next day, I was relegated to the 5th page. Can anyone explain this? This is on Yahoo. Has anyone experienced it before? I would appreciate it if you could give me some advice on this matter.