Month after month, year after year, duplicate content seems to be a HUGE issue. With no decent ways to detect it (that I know of), duplicate content can often go undetected causing problems for months. Almost every single client we take on has duplicate content issues, and often whilst they are client they make changes [...]
Google Needs To Do More To Notify Webmasters About Duplicate Content is a post from: Dave Naylor’s SEO Blog.

