Whats New In Googles Ranking Algorithm?
It seems that Google internally returns a first set of results that is then re-ranked according to multipliers determined in testing just this set of results. If your web site is not included in the first set of results then the re-ranking step cannot help you because no new results are added. If your website is included in the first set of results then the re-ranking can either help you or hurt your rankings. If your web site fails one of the re-ranking tests, then your rankings scores (relevance score, trust score, website age score, etc.) might be lowered and your rankings will drop. Such a new ranking method would explain the yo-yo effect that can be observed for some URLs: a web page goes from search result page one to the end of the results and comes back again. The same web site is always part of the first result set but re-ranked differently.
