I've noticed that site's are loosing it's rankings in Google SERP for two or three keywords but not for all keywords, why this is happening after Google updates in Jan. Also i have seen that websites with low quality back link (PR 0 Back Links) are on top rather than websites with high quality links. Do you think there is lots of mistakes in latest Google updates? Or only i am getting wrong view of Google Panda? Welcome To Your Ideas and Experience with above.