1. Use one category article - however you want, do not put a post in more than one category, because otherwise you risk the article be considered duplicate content by search engines. Using one category also makes navigating the user. 2. Nofollow labels ( tags ) - Again, there is a risk any of the publications to be considered as duplicate content, and also you can be punished for reoptimize or keyword stuffing. It is therefore mandatory labels you have a nofollow attribute. 3. Disable indexing search engine - most easily done by adding a few lines in your file robots.txt . When looking at your site , most of the search engines create nonexistent pages for which you can be penalized by Google. Good luck!