Jane_Doe - 8:08 am on Feb 8, 2010 (gmt 0)
The rules have somehow changed, but how do you compete when you don't know the rules?
The rules always change. They search engines update their algorithms constantly. They tinker with favoring authority sites verses niche sites and back again all of the time. I have one site that almost completely drops in and out of the Google index multiple times per month. It needs some good links to stay in permanently but I haven't had time to work on it.
The best way to deal with it is to get high quality links, have multiple sites, if you can, and to go after hundreds or maybe even thousands of long tail terms per site.