My blog articles2u.com started on April, 2007. I accept more than 300 articles from other authors. All of published articles - duplicate (already published in other site).
I stop accepting articles from other authors and start to post my own articles from Jan 2008.
Now my blog have 620 articles (including duplicate).
End of Dec 2008 my blog penalized by google, my traffic from google reduced to 800 to 30 per day. I am not done any illegal activity for getting penalty from Google.
My webmaster tool statistics page/ top search queries shows my keywords in good place (no change), but in SE I am not see my blog page that position and traffic reduced.
Google penalize for duplicate articles?
I will plan delete all duplicate articles (all article indexed on google). If I delete all duplicate articles it creates any problem for future SEO. (PR, Index, Ban by google).
Please provide your idea to solve my problem.
Thanks in advance
Sarpras Navas