google ranking update

Hi guys my site has suddenly dropped in google ranking.I can also find a few other sites which have dropped suddenly. Did anybody experienced the same? Can someone tell me what will be the reason.Not only my site multiple sites are dropping for multiple keywords.Can somebody share some info..

Hi Mates, ;) I created 2 blogspot blogs around 2-3 years ago. Created some contents which does not have SEO optimization and KW at all. But, Google has offered me PR 1 for both blogspot blogs. Do you think Google gave me PR 1 due to age domain ? Thanks

So today there was a huge fluctuation in rankings in wast number of websites, mine and from some of my colleagues also. I am guessing the update is released and its steering up things like crazy. Have you seen any fluctuations today ? I will update later on with a complete analysis of all...