Hi all!
I SEO my website,2 days ago, Google update PR and my site from pr0 to pr2, so It get rank #5 on first page. But after 5 hours, it's disappear. I think the reason is duplicate content, because I use the same article which I submit to EZA before I made this website.

So my question is:I will create new unique content,should I keep the old link or I create new link? I create a lot of backlinks to this link.

Many Thanks!