Hi guys, I have the following question and I have no idea how to solve it. I have a service and an application that live on, let's say, example.com. Pretty a soon, I will allow the users of my service and my application to share content direct from the app. The content will appear like this: example.com/content_url. Therefore, I am afraid of some things I have no idea how to cope with and even how to google them. 1. What if my users start sharing content that is not unique, or even fully copied from a different site? How will it affect my example.com ranking? 2. If there is really good content and some copied content, is there a way to automatically scan it and add noindex - nofollow tags to the duplicated content? 3. How will good and unique content will affect my web-site? Will it improve my rankings and help my example.com appear on SERP based on the article's keywords? 4. Will all those example.com/content_url be added to my sitemap? And in general, how can such feature affect my site? Thank you for your time and consideration!