There seems to be a situation where you can get a good placement for a new site, but it quickly drops unless you start getting good inbound links.
I had the situation where one of my new sites went into both google and Yahoo at No.2 for the same specific search term. I refreshed the search and I could see my site dropping before my very eyes within google yahoo took a few days to drop.
when we jump we stay in the air, without anything to support us we quickly drop. my advice get links into your site with your target keyword as your anchor text, to be the support to keep your site up there
