I rewrite your articles to pass the same message as the original source article but with a 0% similarity score. This has been proven by my rewrites which have been run through copyscape's similarity checker by my clients. There are times you need to rewrite certain pages on your site to update them and make them relevant. There are also times you also need to rewrite popular articles to make them unique. This ensures popular articles that pass copyscape for you website. My rewrites will surely shoot you up the rankings on Google.