Content is king apparently, and the more unique content you add to your website, the more authority your site has in Google's eyes, and the higher the chances of ranking higher. However it can't just be any content, the content has to be unique and copyscape passed - not found anywhere else. How true is this? Let's say I write up a 100% original 500 word article and post it on 4 different websites at once. Is it no longer unique to Google since it's on 4 websites? What about 2 websites? What about 8? Where exactly is the line drawn in Google's eyes where your content is no longer unique. Does the order in which the content is indexed matter? For example, if I post the article on one website and it gets indexed, and then post it on 3 other websites a month later, does the power from the first original website get lost? I'm just trying to understand how all of this works. The part that makes me skeptical to all of this is the fact that I've kept a blog for one of my clients (he's a local plumber) for over a year. I would post about 8 UNORIGINAL articles per month (client knew this and was fine with it). I would just copy plumbing related articles and news from plumbing websites, post it in Wordpress with a featured image, and add the source at the bottom. After about 4 months, the website's traffic DOUBLED from around 150 visitors per month to around 300 visitors per month. I thought everything had to be unique? Can someone please help me understand all of this?