I think one of my sites (http://speedcamerapoi.com/) dropped from PR2 to PR0 in the last update... for the life of me I am not sure of the reason. Only thing I can think of is because of duplicate content. Each time the database is updated a page is created with the type, city and country where, along with a image. I am wondering because a lot of the content on these pages is the same would this be the cause ? if not any other ideas ? still getting ~50 visitors a day from google so appears nothing changed here Tidy
Yes that is possible because when google update it scroll the content of the website if your content of the website duplicate or copy from another site that effect of your page rank.
Duplicated contents can get your web site penalized with out any doubt. Google search engine does not ban a web site directly unless the web site has broken many rules, thus a web site may go through different types, and levels of penalization before it is completely banned, page rank penalization is one them. In order to remove the penalization, and to correct what was done wrong, remove all duplicated contents from your web site, and replace them with original, unique contents.
google is always looking for unique fresh content so it may be the reason that due to duplicate content ur PR get down..
I don't think so. duplicate content does not effect pagerank, backlink and update content is the biggest factor of PR change. that's newbie opinion. what about you?
Yes , its more chances to get your site's PR goes down due to duplicate content , copied images , not proper header , title ...so try to make unique and informative content for your site .....