I have several autoblogs and I want them to rank on Google based on the keywords I select (who doesn't?). However, I am wondering if Google will penalize the sites because it's an autoblog and because it has duplicate content. So I am seeking advice as to is it possible to rank on Google with an autoblog or should I mix it with unique content once in a while? I will be building backlinks to the pages I want to rank. I am currently using WP-Robot to run the blog and try to make it as natural as possible with a mixture of content and videos. Please advice.