Today I was checking my webmaster tools and I got this message for one of my sites: Dear site owner or webmaster of http://xxxxxxxxxx.com/, We've detected that some of your site's pages may be using techniques that are outside Google's Webmaster Guidelines. If you have any questions about how to resolve this issue, please see our Webmaster Help Forum for support. Sincerely, Google Search Quality Team This site has been up for over a year and has been ranking in the top 5 ever since. It is a pretty thin site, so maybe lacked of content caused it. I also have an article directory setup on the domain using ezarticleranks.com but I also have other domains setup the same way with no problems. The most obvious thing to me is it was a competitor. A new site popped up targeting the same keyword and this doucher copied my exact WP theme, layout, design, etc. Im thinking he might of reported my site to google, what do you think?