jdMorgan - 6:19 pm on Dec 27, 2007 (gmt 0)

Focusing on the sites that have moved up is a red herring. For this approach to have any meaning, all five sites which were below yours would have had to have had superior factors --or to have implemented those factors-- which caused them to suddenly outrank your site -- all simultaneously, and all to the same degree (since their order did not change). Even cursory statistical analysis suggest that this is extremely unlikely.

Focus on why the one site dropped -- that is the productive path.

Jim