I hope I am not asking a question that will make me look like a sill newbie. I run a popular blog in my niche. I post unique articles to it weekly and have a large amount of readers. Recently one of my readers informed me of a site that steals all of my posts and posts them onto a wordpress blog. It is not done through RSS the guy actually goes to my blog, copies an article and pastes it to his blog. His blog is riddled with adsense ads ect. He is basically using my content to rank on Google. This is probably a common problem for internet marketers. my questions are: Will I be penalised by Google for the duplicate content? Can I stop him?