Would it be a good idea to use existing content of my website, which got penalized for a new website in the same niche? One of my friends said it will be harder to rank, because the content is the same. So better starting over with completely new content? By the way, does it really affect the rankings or indexing? He said he can clearly see that it takes much longer for the website to show on on the SERPS, when he used existing content.